Horford is a key member of Joe Mazzulla's roster. Not only is he a reliable presence on the court, he's also a leader in the locker room and on the bench. Nevertheless, Horford may value the opportunity to keep contending for a championship next season, which is something Boston is unable to offer.

Boston Celtics champion center Al Horford is expected to leave town for a new NBA home, after all. Horford, who has logged seven non-consecutive seasons in Boston and become a beloved local figure, appears destined to become the latest defector for Boston this summer.

Several teams are after Al Horford and the Celtics just might have to stomach seeing the free agent veteran center sign with a hated archrival.