You're being way too generic and oversimplifying by saying because he was on an SEC team that makes him a great candidate. For every SEC RB that gets drafted, there are 4 or more times as many who never come close. You still have to do something and be consistent. He also doesn't have great top end speed. Quicker than he is fast. He has a lot to do to pop on any sort of a radar. The NFL doesn't look at 3rd string guys at meh schools just because it's an SEC school.
It would be beyond shocking if he got drafted. There's next to nothing to even start thinking he will. Speed, production, earning his spot in college. Grad transfers usually are such for a reason. Remember that no matter where they're from.