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.

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.