To be honest I think a part of holding him out further is that Carvin is learning the position of C with game action. Cooper has at least 3 years of eligibility left and could potentially get a RS this year depending on how much action he sees, don't be surprised if he doesn't play against Bama either. It's a measured plan, but one I don't hate.
These are the guys who have already used a RS. Typically on the OL you always try to RS the freshmen or guys not in the 2 deep. Cooper has only played I think in 2 or 3 games so far.
Lampley
Harris
Ball
Davis
Perry
Robinson
Calbert
Akporoghene
Lane