Why?
If the Jazz aren't going to be active in free agency until 2013, they lose absolutely nothing with this deal and gain Kemba Walker.
If Dwight Howard isn't extend-and-traded, he'll be a free agent next summer, and if the Bobcats can clear Maggette, could have the money to lure in him plus one more big name free agent (Deron, for example).
Do you really think the Jazz are going to do better than Kemba Walker plus a 2013 expiring for the TPE? Or do you think Charlotte would be stupid to do this deal IF Howard+Deron is a real possibility?