Luka Garza has agreed to a two-year, $5.5 million fully guaranteed deal with the Boston Celtics. (Shams Charania on Twitter)

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

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