I'd say its still Whiteside's job to lose. You have to think the Jazz are perfectly happy with Milsap as the full time PF especially with his impressive numbers in the playoffs this year - even against the Lakers. Also at the PF you can use AK, Memo, and Tomic in a couple years. At center though, Memo doesn't work and his defense will just get worse with that injury. Koufas is still a wildcard but has said himself he prefers playing PF as he's not a banger. Fes is an atrocious ft% shooter and doesn't block that many shots for having a 7'4 wingspan. He plays decent man defense against other bigs since he can't be backed down, but will require a raise to keep and not sure the Jazz want to spend their little remaining money on him.
Whiteside is an immature headcase of a project that may not even see significant PT for years. Not just no, but HELL NO!