The Celtics are preparing for the possibility of losing both Kyrie Irving and teammate Al Horford in free agency this summer. Contract negotiations between Horford and Boston’s front-office reportedly fell apart, and the five-time NBA All-Star is expected to ink a four-year deal elsewhere. Horford, 33, opted out of $30. 1 million in the final […] The post Celtics Reportedly Preparing to Lose Kyrie Irving and Al Horford appeared first on SLAM.