Butler is going to take Ray Allen's spot? Allen is basically a 3-point specialist these days. Granted, he's making Steve Blake look like Stever Kerr this year by comparison, but he at least stretches a defense on reputation alone.
Caron Butler does a lot of things well, but he's no 3-point shooter. Boston would have to completely alter their offense to accomodate what Butler does best. If I was Ainge, I'd also be concerned about Butler's long-term value. He hasn't played more than 67 games in a season since 2005-06, and his PER and other statistics are considerably lower this season than in other years. Is that a function of Butler being used incorrectly? Is it the result of Butler's body starting to break down as an accumulation of his recent injury problems? Who knows, but for a guy turning 30 next month who has a PER in the 13s, would Boston be willing to pay him $10.5 million next year when they can let Allen expire this year?
It certainly would be a blockbuster trade, but I'm not positive that it helps the Celtics very much, unless getting Jamison to come off of the bench is the real reason for the trade.