The Celtics and Jaylen Brown have reportedly agreed on a five-year contract extension worth $304 million.
The deal was reported by NBA reporters Shams Charania of The Athletic and Marc J. Spears of ESPN. It would be the most lucrative contract in NBA history.
According to Charania, the contract is fully guaranteed, includes a trade kicker, but has no player-option.
Brown, 26, was originally drafted third overall by Boston in 2016. He has grown into a two-time All-Star and is one of the central players on a team that advanced to the Eastern Conference finals this past season.