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.

Free agent center Luka Garza has agreed to a two-year, $5.5 million fully guaranteed deal with the Boston Celtics, sources tell ESPN. The Celtics negotiated the new deal with Garza's representatives Mark Bartelstein and Kieran Piller of @PrioritySports tonight. pic.twitter.com/d5x5HzGYIL

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