I would venture to guess he's still immature for his age, so staying in school probably wouldn't have mattered.
Manziel believed his own press clippings. That's his problem. And I suspect his tenure with the CFL isn't going to be that long.
Since I believe in redemption I will root for him to succeed.
If he doesn’t, he doesn’t. Not everyone gifted with natural ability succeeds.
If he does succeed it will be fun to watch :)