Jaylen Brown, Celtics agree to record 5-year, $304M supermax extension

Boston Celtics star Jaylen Brown has agreed to sign the richest deal in NBA history -- a five-year, $304 million supermax contract extension, his agent Jason Glushon told ESPN on Tuesday.

Brown and Glushon met with Celtics management and ownership Sunday evening in Boston, finalizing the remaining elements of the historic deal that keeps the two-time All-Star under contract through the 2028-2029 season.

Brown's deal exceeds two-time MVP Nikola Jokic's $276 million extension with the Denver Nuggets, an increase based on the rise in the salary cap and league revenue. The 26-year-old Brown took a physical Monday in Boston to solidify the deal.

Brown became eligible for the five-year supermax…