Assuming there are no fireworks (i.e.: Love trade) that get us closer to "win now" mode, My preference at center is signing Greg Oden, along with a Steisma/Jason Smith-type back up.
We'll probably be in the lottery again next year, and the 2015 draft is loaded with center prospects. That is where we find our long-term solution at the position. In the meantime, we need size at the 5, and Oden offers an interesting balance of lower cost, with some upside. He's still only 25, and if you can keep him in the lineup he is capable of being a very effective post player. I think I'd want enough depth at the position to be able to limit his minutes to 25 min per game even if he is supposedly totally healthy though.
He seems like he'd be a worthwhile experiment for a team in our current situation.