 opens training camp on July 24th at Gillette Stadium in Foxborough. The Boston Celtics introduced their new jersey patch partner on Tuesday. Amica Mutual Insurance has entered into a multi-year partnership with the Celtics. As part of the deal, Amica will be designated the exclusive auto, home, and life insurance partner of the Boston Celtics, and its logo will appear on the left front shoulder of all Celtic jerseys beginning in the 2024-25 season, which is coming up in October.