Atlanta still makes the most sense for him I guess, they could use a real C to move Horford to PF and obviously they could really use a matchup for Dwight Howard who absolutely owns them.
Though I'm not sure what that does to the rest of their lineup. They better be keeping Josh Smith in the starting lineup, he's far too valuable. Maybe move him to SF and bring Marvin off the bench.
You lose shooting that way, but you allow Horford to gain some space and move away from the rim with his game and you have a reliable low post scorer to throw it in to in Shaq. And that's a strong rebounding line up. Marvin has not become the player I thought he could but coming off the bench he'd be great. With Crawford and Williams off the bench you are much improved with your reserves and you're bringing a lot of energy.