 one of the most iconic franchises in all of sports is up for sale shortly after winning a championship corresponding death and call bar has this story the ownership group that controls the reigning nba champion boston celtics says that it intends to sell all its shares of the team in a statement boston basketball partners l l c said it intends to sell the majority interest of the team in two thousand twenty four or early two thousand twenty five the celtics defeated the dallas mavericks in the nba finals last month