FILE - The Boston Celtics logo is seen at center court on the parquet floor before an NBA basketball game between the Boston Celtics and the Atlanta Hawks Sunday, Feb. 13, 2022, in Boston. (AP Photo/Winslow Townson, File)BOSTON (AP) — Private equity mogul William Chisholm has agreed to buy the Bos ton Celtics in a deal that values the NBA’s reigning champions and most-decorated franchise at a minimum of $6.1 billion. It’s the largest price ever for American professional sports team. If the deal is approved by the NBA’s board of governors this summer, the sale would top the $6.05 billion paid for the NFL’s Washington Commanders in 2023. Chisholm is a Massachusetts native and graduate of Dartmouth College who is the managing partner of California-based Symphony Technology Group. ...read more read less