IMO, Roydell, Jase, and Kyle will most likely get redshirted, maybe one of the 3 freshmen might see playing time if needed. Najee and Trey will be 1A and 1B while KRob and BRob will see lots of mop up duty.
Before anyone says BRob will be 2nd behind Najee, remember Trey was getting high praised by the staff during pre season and most thought he was going to passed up BRob as the season goes along. Unless Trey is not 100% , I wouldn't be surprised to see Brian Robinson transfer. There was talk that he was thinking about it not so long ago. Now with a busy backfield , he just might think about it again.
Regardless, you can never have enough backs esp. in the SEC.