The sale of the Boston Celtics has been finalized. Private equity mogul Bill Chisholm has taken control of the NBA’s most-decorated franchise from a group led by Wyc Grousbeck that had owned them for more than two decades.

There were concerns that he might not return after his contract was up, and his status in terms of health was unclear after a knee injury.

The Celtics have made it official with the leadership structure between new governor Bill Chisholm and longtime owner Wyc Grousbeck.