Perhaps, but I think "potential head case" is a bit strong. As far as I can tell he never got into any trouble, no DUIs, no bar-room fights, no one game suspensions for violating team rules, and according to Saban himself, no showing up at camp out of shape or off season troubles. According to RobertWeathers he made some immature tweets about not liking AL his freshman year and was late for a couple of meetings early on. And I found a quote where early in his second year Saban indirectly (very indirectly) complimented him by saying he had previously had a problem with going left when everyone was supposed to go right but he had improved and hopefully he would get more playing time, indicating that he did some zigging when he should have zagged early on. He seemed to turn it around his third year, he was slowed by injury early and then in the last 4-5 games just absolutely dominated. Hopefully Barmore's turnaround late in his third year will portend great things from him here with the Pats.