Boston Celtics forward Grant Williams -- who'll be a restricted free agent this summer -- had surgery on his left hand Friday that's expected to have him fully recovered for the start of NBA training camp in the fall, sources told ESPN.

The surgery, considered successful, comes after Williams hurt the hand in March. Williams decided to continue playing with the injury through the Celtics' run to the Eastern Conference Finals.

As a restricted free agent, Boston has the ability to match any offer sheet that Williams signs with another team. He could also negotiate a new deal with the Celtics. Williams has been a 45 percent three-point shooter since arriving as a rookie in the 2019-2020 season, and proven to be a versatile defender for the franchise.

Williams, 24, had career bests this season of 8.1 points, 4.6 rebounds and 1.7 assists in nearly 26 minutes a game.