If I'm Ainge I look to trade a couple of the young guys for some solid vets.
I've heard that the Celts are thinking of trading Wally and future considerations to Indiana for Jackson and either Foster or Jasikevicius.
On a side note: two teams that will make an impact this year (note: make the playoffs, and contend in the next couple of years) are the Bucks and the Raptors.
The Raps have looked pretty good their first 3 games (just need to be better at chosing their shots), and Redd/Bogut/Villanueva looks good for the Bucks (just need their bench to start scoring).
Detroit will struggle this year. They'll make the playoffs, but they don't have any intensity. Muhammad has been good for them early on, but he'll fall off the face of the earth soon.
If Korver can keep producing off the bench, and the 6ers can find a back up PG that can score, I think they can win the Atlantic. The Nets have a good starting line-up, but I don't think a team that has to rely on so many unproven bench players can play at a high level all season (but I still think they can make the Playoffs)
Dark Horse in the East: Indiana Pacers. Daniels,Harrison,Armstrong,Foster, and Jas... Sarunas has been a very good bench. The only thing they need to do is get rid of Jackson.