Jordan could really use another year, considering he's basically an undersized center at this point (and would be undersized even as a 4 at the NBA level). He has no floor or midrange game, and his offense consists solely of putbacks against smaller players. His FT shooting is also abysmal. He slimmed down a ton from his FR to his SO year; with another summer of similar conditioning and improvement, he could be a mid to late 1st rounder.
As it is now, I'd be surprised if he ends up anything other than a 2nd rounder. Not enough height or skills to be drafted any higher as an NBA forward.