How do you know? You watch him in practice?I don't care if he's 6'10 or 6'4. He doesn't have the skills to play the "3." And no coach is going to play him there hoping he somehow develops those skills.
And why are you comparing him to two superbly talented NBA players? I like Hawkins' potential to play for us, but he's not even in the same stratosphere as the two guys you mention.