I agree that he'd be good to get but not realistic. In order to have a chance, Chicago would need to want to use a few of their pieces to upgrade at 1 position, and we'd have to be willing to deal Ray, basically. In that case, we'd need to take back some combination of Thomas with Hinrich, Hughes, Safalosha, Nocioni, Deng, etc. I don't think Chicago would be willing to deal a package for Ray that would make it worthwhile for the Celtics.
For example Ray, Baby, Scal for Deng, Hughes, Thomas, Safalosha works cap wise, but would either team want that?
http://games.espn.go.com/nba/features/traderesult?players=9~3023~3464~2381~2456~3032&teams=4~4~4~2~2~2&te=&cash=Wouldn't this trade make more sense? Ray, Powe, Walker for Gordon, Nocioni, and Thomas?
Why Boston does it: Gets younger at the 2 while downgrading, but not terribly. Gets (young) frontcourt length we desperately need with some star potential too. The Posey replacement that we've needed in Nocioni.
Why Chicago does it: They are currently paying $17-$20 mil per season until 2013 for their combination of Deng and Nocioni at the 3, while still having thefalosha there too. They also have Hinrich locked up for 4 years at the 2, so will have to let Gordon walk this year anyways. While losing the potential in Thomas, they get some potential returned in Walker. Ray might be able to help bring Rose along like he did with Rondo.
I'm undecided on whether I would do this or not. In an offseason, probably. But midseason, too many players traded to risk chemistry taking too long to get right.