Garza's two-year deal comes after the Celtics lost Luke Kornet to the Spurs, and could potentially lose Al Horford as well.

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

The Celtics have made their first move of free agency on Monday night, agreeing to terms with former Wolves big man Luka Garza, a source tells MassLive. The deal with Boston is a two-year pact for the veteran’s minimum. ESPN was first to offer the deal.