Doesn't necessarily mean that. IF Ricky comes back, Saban will have two incredible high caliber runningbacks, one of whom he owns the contract rights to which would likely be completely incentive laden.
The odds are slim, but honestly -- Ricky Williams would be FINE with that sort of arrangement. Obviously Ronnie Brown would too, based on what he said and the fact that Saban drafted him.
I think Ronnie Brown must have incredibly impressed Saban on a lot of levels... I am happy with the pick.