Report: Boston Celtics sign Jaylen Brown to richest contract in NBA history

Celtics Brown Basketball FILE - Boston Celtics' Jaylen Brown (7) dunks the ball against the Golden State Warriors during the second quarter of Game 3 of basketball's NBA Finals, Wednesday, June 8, 2022, in Boston. Celtics wing Jaylen Brown has agreed to terms on a five-year supermax contract extension that will pay him up to $304 million, his agent said on Tuesday, July 25, 2023. (AP Photo/Michael Dwyer) (Michael Dwyer)

Celtics Brown Basketball FILE - Boston Celtics guard Jaylen Brown (7) dribbles the ball during Game 3 of the NBA basketball playoffs Eastern Conference finals against the Miami Heat, Sunday, May 21, 2023, in Miami. Celtics wing Jaylen Brown has agreed to terms on a five-year supermax contract extension that will pay him up to $304 million, his agent said on Tuesday, July 25, 2023. (AP Photo/Wilfredo Lee, File) (Wilfredo Lee)

Miami Heat v Boston Celtics - Game Five BOSTON, MASSACHUSETTS - MAY 25: Jaylen Brown #7 of the Boston Celtics reacts against the Miami Heat during the second quarter in game five of the Eastern Conference Finals at TD Garden on May 25, 2023 in Boston, Massachusetts. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Maddie Meyer/Getty Images)

Miami Heat v Boston Celtics - Game Five BOSTON, MASSACHUSETTS - MAY 25: Jaylen Brown #7 of the Boston Celtics reacts against the Miami Heat during the second quarter in game five of the Eastern Conference Finals at TD Garden on May 25, 2023 in Boston, Massachusetts. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Maddie Meyer/Getty Images)

Boston Celtics v Miami Heat - Game Four MIAMI, FLORIDA - MAY 23: Jaylen Brown #7 and Grant Williams #12 of the Boston Celtics interact against the Miami Heat during the fourth quarter in game four of the Eastern Conference Finals at Kaseya Center on May 23, 2023 in Miami, Florida. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Megan Briggs/Getty Images)

Boston Celtics guard Jaylen Brown drives to the basket against Miami Heat forward Jimmy Butler (22) in the second half of Game 1 of the NBA basketball Eastern Conference finals playoff series in Boston, Wednesday, May 17, 2023. (AP Photo/Charles Krupa)

NBA: Playoffs-Philadelphia 76ers at Boston Celtics May 14, 2023; Boston, Massachusetts, USA; Boston Celtics guard Jaylen Brown (7) looks at his bench after he was called for a technical foul against the Philadelphia 76ers during the second quarter of game seven of the 2023 NBA playoffs at TD Garden. Mandatory Credit: Winslow Townson-USA TODAY Sports - 20667773

Philadelphia 76ers v Boston Celtics BOSTON, MASSACHUSETTS - OCTOBER 18: Jaylen Brown #7 of the Boston Celtics and Jayson Tatum #0 look on during the first half against the Philadelphia 76ers at TD Garden on October 18, 2022 in Boston, Massachusetts. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Maddie Meyer/Getty Images)

Philadelphia 76ers v Boston Celtics - Game Five MASSACHUSETTS - MAY 09: Jayson Tatum #0 of the Boston Celtics, Al Horford #42 and Jaylen Brown #7 look on during the first quarter of game five of the Eastern Conference Second Round Playoffs against the Philadelphia 76ers at TD Garden on May 09, 2023 in Boston, Massachusetts. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Maddie Meyer/Getty Images)

Boston Celtics v Philadelphia 76ers - Game Three PHILADELPHIA, PENNSYLVANIA - MAY 05: Jaylen Brown #7 of the Boston Celtics celebrates a basket with Grant Williams #12 and Al Horford #42 against the Philadelphia 76ers during the third quarter in game three of the Eastern Conference Second Round Playoffs at Wells Fargo Center on May 05, 2023 in Philadelphia, Pennsylvania. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Tim Nwachukwu/Getty Images)

Philadelphia 76ers v Boston Celtics - Game Two BOSTON, MASSACHUSETTS - MAY 03: Joel Embiid #21 of the Philadelphia 76ers defends Jaylen Brown #7 of the Boston Celtics during the second half of game two of the Eastern Conference Second Round Playoffs at TD Garden on May 03, 2023 in Boston, Massachusetts. The Celtics defeat the 76ers 121-87. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Maddie Meyer/Getty Images)

Philadelphia 76ers v Boston Celtics - Game Two BOSTON, MASSACHUSETTS - MAY 03: Jaylen Brown #7 of the Boston Celtics dunks the ball over Joel Embiid #21 of the Philadelphia 76ers during the second half of game two of the Eastern Conference Second Round Playoffs at TD Garden on May 03, 2023 in Boston, Massachusetts. The Celtics defeat the 76ers 121-87. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Maddie Meyer/Getty Images) (Maddie Meyer/Getty Images)

NBA: Playoffs-Milwaukee Bucks at Boston Celtics May 15, 2022; Boston, Massachusetts, USA; Boston Celtics guard Jaylen Brown (7) and forward Jayson Tatum (0) celebrate during the second half of their win over the Milwaukee Bucks in game seven of the second round of the 2022 NBA playoffs at TD Garden. Mandatory Credit: Winslow Townson-USA TODAY Sports - 18278292

NBA: Boston Celtics at Denver Nuggets Jan 1, 2023; Denver, Colorado, USA; Boston Celtics guard Jaylen Brown (7) prior to the game against the Denver Nuggets at Ball Arena. Mandatory Credit: Ron Chenoy-USA TODAY Sports - 19711052

NBA: Boston Celtics at Brooklyn Nets Apr 25, 2022; Brooklyn, New York, USA; Boston Celtics guard Jaylen Brown (7) controls the ball against Brooklyn Nets guard Kyrie Irving (11) during the fourth quarter of game four of the first round of the 2022 NBA playoffs at Barclays Center. The Celtics defeated the Nets 116-112 to win the best of seven series 4-0. Mandatory Credit: Brad Penner-USA TODAY Sports - 18153894

Boston Celtics' Jaylen Brown in the second half of an NBA basketball game against the Charlotte Hornets, Sunday, Oct. 2, 2022, in Boston. (AP Photo/Steven Senne)

NBA: Boston Celtics at Brooklyn Nets Apr 23, 2022; Brooklyn, New York, USA; Boston Celtics guard Jaylen Brown (7) takes a three point shot over Brooklyn Nets forward Kevin Durant (7) in the first quarter at Barclays Center. Mandatory Credit: Wendell Cruz-USA TODAY Sports - 18140401

Celtics game 3 NBA FInals Boston Celtics guard Jaylen Brown (7) dunks the ball against the Golden State Warriors during the second quarter of Game 3 of basketball's NBA Finals, Wednesday, June 8, 2022, in Boston. (AP Photo/Michael Dwyer) (Michael Dwyer/AP)

Jaylen Brown scores 32 points; Celtics rout Wizards 144-102

Celtics vs. Grizzlies Boston Celtics guard Jaylen Brown (7) dunks ahead of Memphis Grizzlies guard John Konchar (46) in the second half of an NBA basketball game Sunday, April 10, 2022, in Memphis, Tenn. (AP Photo/Brandon Dill) (Brandon Dill/AP)

Heat beat Celts Miami Heat forward Jimmy Butler (22) drives to the basket against Boston Celtics guard Jaylen Brown (7) during the second half of an NBA basketball game Wednesday, March 30, 2022, in Boston. (AP Photo/Charles Krupa) (Charles Krupa/AP)

Celtics v Timberwolves Boston Celtics guard Jaylen Brown (7) drives toward the basket past Minnesota Timberwolves guard Jordan McLaughlin (6) in the first half of an NBA basketball game, Sunday, March 27, 2022, in Boston. (AP Photo/Steven Senne) (Steven Senne/AP)

Celtics Pistons Basketball Boston Celtics guard Jaylen Brown (7) passes the ball while being guarded by Detroit Pistons guard Hamidou Diallo, left, during the first half of an NBA basketball game Saturday, Feb. 26, 2022, in Detroit. (AP Photo/Duane Burleson)

Thunder Celtics Basketball Oklahoma City Thunder forward Aleksej Pokusevski (17) covers Boston Celtics guard Jaylen Brown (7) during the first half of an NBA basketball game, Tuesday, April 27, 2021, in Boston. (AP Photo/Charles Krupa) (Charles Krupa/AP)

Michael Carter-Williams, Jaylen Brown Boston Celtics' Jaylen Brown, left, passes off against Orlando Magic's Michael Carter-Williams during the first half on an NBA basketball game, Sunday, March 21, 2021, in Boston. (AP Photo/Michael Dwyer) (Michael Dwyer/AP)

Jaylen Brown Celtics Boston Celtics guard Jaylen Brown (7) dunks against New York Knicks guard RJ Barrett, left, during the first half of an NBA basketball game Wednesday, April 7, 2021, in Boston. (AP Photo/Charles Krupa) (Charles Krupa/AP)

Jaylen Brown, Saddiq Bey Boston Celtics guard Jaylen Brown looks to pass the ball as Detroit Pistons guard Saddiq Bey (41) defends during the first half of an NBA basketball game Friday, Jan. 1, 2021, in Detroit. (AP Photo/Carlos Osorio) (Carlos Osorio/AP)

Boston Celtics v Cleveland Cavaliers - Game Four CLEVELAND, OH - MAY 21: Jaylen Brown #7 of the Boston Celtics reacts after a basket in the fourth quarter against the Cleveland Cavaliers during Game Four of the 2018 NBA Eastern Conference Finals at Quicken Loans Arena on May 21, 2018 in Cleveland, Ohio. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Gregory Shamus/Getty Images) (Gregory Shamus/Getty Images)

Jaylen Brown BOSTON, MA - DECEMBER 4: Jaylen Brown #7 of the Boston Celtics dunks during the second half of the game against the Milwaukee Bucks at TD Garden on December 4, 2017 in Boston, Massachusetts. The Celtics defeat the Bucks 111-100. (Photo by Maddie Meyer/Getty Images) (Maddie Meyer)

Celtics come out of All-Star break with win over Timberwolves Boston Celtics guard Jaylen Brown (7) drives against Minnesota Timberwolves guard Josh Okogie (20) in the second quarter of an NBA basketball game Friday, Feb. 21, 2020, in Minneapolis. (AP Photo/Andy Clayton-King) (Andy Clayton-King/AP)

James Harden, Jaylen Brown Houston Rockets' James Harden (13) drives past Boston Celtics' Jaylen Brown (7) during the first half of an NBA basketball game in Boston, Saturday, Feb. 29, 2020. (AP Photo/Michael Dwyer) (Michael Dwyer/AP)

Boston Celtics guard Jaylen Brown (7) shoots over Cleveland Cavaliers center Tristan Thompson, left, during the second half of an NBA basketball game in Boston, Monday, Dec. 9, 2019. The Celtics won 110-88. (AP Photo/Charles Krupa)

Boston Celtics guard Jaylen Brown (7) drives to the basket against Cleveland Cavaliers guard Collin Sexton, right, during the second half of an NBA basketball game in Boston, Monday, Dec. 9, 2019. The Celtics won 110-88. (AP Photo/Charles Krupa)

Boston Celtics guard Jaylen Brown shoots as Los Angeles Clippers forward Kawhi Leonard defends during the first half of an NBA basketball game Wednesday, Nov. 20, 2019, in Los Angeles. (AP Photo/Mark J. Terrill)

CANTON, MA - SEPTEMBER 25: Jaylen Brown #7 of the Boston Celtics takes questions from reporters during Celtics Media Day at High Output Studios on September 25, 2017 in Canton, Massachusetts. (Photo by Maddie Meyer/Getty Images)

By Frank O'Laughlin

BOSTON — The Boston Celtics have reportedly signed star forward Jaylen Brown to the richest contract in the history of the National Basketball Association.

Brown and the Celtics have agreed on a five-year supermax extension worth up to $304 million, ESPN Senior Writer Marc J. Spears reported.

Brown’s deal exceeds two-time MVP Nikola Jokic’s $276 million extension, ESPN reported.

The 26-year-old took a physical Monday to solidify the deal, his agent Jason Glushon told the news outlet.

[ Beyond the court: Celtics’ Jaylen Brown fights for social justice ]

He became eligible for a supermax deal after earning second-team All-NBA honors in 2022-2023.

During the 2022-23 season, Brown averaged a career-best 26.6 points and 49% percent shooting.

Brown is slated to earn $31.8 million in the final year of his previous deal.

This is a developing story. Check back for updates as more information becomes available.

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