The Celtics obviously have bigger concerns right now, with Paul Pierce and Ray Allen in limbo.
But Brewer would fill a lot of needs for the defending Eastern Conference Champs.
He would provide a replacement for Tony Allen, who the Celtics may decide not to re-sign.
Brewer is a good defender on a defensive-oriented team, so he would fit right in as an option off the bench.
He is also young, and youth is something the Celtics desperately need.
He doesn’t have the shooting that James Posey had, but he could potentially fill a similar role as Posey did a few years back.
Source :http://bleacherreport.com/articles/414171-nba-free-agency-2010-top-five-destinations-for-ronnie-brewer#page/6