The Celtics currently have three centers on the depth chart following Kornet's exit in free agency. The post Celtics lose Luke Kornet after center signs 4-year deal with Spurs appeared first on Boston.

NBA free agency is set to open on Monday, as players and teams can agree to deals starting at 6 p.m. A few major names have already re-signed with their incumbent teams — most notably LeBron James opting into the final year of his contract for the first time in his career — before the floodgates open.