I think Smart stays put at Bama, and gets a sizeable raise. I hope that behind the scenes there is a "coach in waiting" type thing going on. Saban only has another 3 years left at the most probably. If Smart were to go to AU, that would be a big blow to Alabama as far as coaches, and recruits. According to Tidesports, AU has requested permission to speak to Smart, but TS hasn't confirmed whether an interview has been setup.
I know that most AU fans want a proven rock star coach, but I think Smart could do well at AU.