I haven't written him off at all.
I think Bailey and Hooker have the best shot as we stand today based on what I've personally seen in games from each of the 4. I have defended Maurer more than I wanted to simply because some took unfair shots. He has consistency problems along with very good talent.
But if you want an honest answer... Milton has the highest ceiling. The only damper on my excitement over him is what I stated about his past play. If he can or is or has overcome those problems then I would LOVE to see him as the starter. When he was cold, it was ugly. When he was hot... he made some of the prettiest, tight window throws you'll ever see. And some of them were 30-40 yards downfield. His mobility IMO would be more of an asset in designed runs than broken fields. IOW's, I didn't see very good "escapability" in his Michigan play. Like I said elsewhere in defending Bailey, if I have my rathers... I don't want to see any of the QB's running down the field with the ball. I want to see WR's, TE's, and RB's making those big plays.
PS- none of his problems were ever physical ability. Decision making will be the most critical factor for the winner of the job.