If you trade Ray, you need to get an all star back. There aren't many teams that would be willing to part with an all star for an expiring, so Ray will most likely have to be packaged with Rondo to truly get a great player.
Redd and RJeff are intriguing. A lot of the other guys wouldn't exactly make a "new big 3." Which is what we'd have to do. Danny won't be trading Ray Allen for bench fillers.
Our window is 1-2 years. I only trade Ray if our window gets extended. Some trades I see actually kill our chances for 2009-2010, which is in all likelihood our best chance to win it.