One in college is Texas. Alabama cannot compete with Texas if they throw the checkbook at him
Its really funny that people actually think this. There is no amount of money that Texas could or would offer that Alabama can't match. Their AD may make the most money, but they are not going to give all the revenue to the FB coach, so just stop.
The NFL OTOH can offer more than Bama can offer, specifically an ownership stake. I've said for a long time that if he leaves it would be back to the NFL. I do agree it's not an accident that his name has been coming up. Either he has interest in going back or he is trying to get more money from Bama. It would not surprise me if he goes or stays a case can be made for both.