Garza would likely play the backup role as a third-string center for Boston, pending other moves in free agency.

The Celtics lost one of their key reserves in free agency as Luke Kornet is headed to the Spurs. Kornet agreed to a four-year, $41 million deal with San Antonio, a source confirmed to MassLive, as the big man got an expected big contract on the open market. ESPN’s Shams Charania was the first to report the deal.