Not worried about this at all. Rajion Neal should easily secure the #2 RB spot by next year and Tom Smith will be a very solid #3. Oku hasn't turned out to be the speedy APB that everybody thought he could be out of highschool. He isn't good enough between the tackles for the SEC and isn't fast enough on the edge.
Picking up a guy like Bigelow, Bellamy or Romar as our change-of-pace back will more than make up for Oku leaving. Not going to Dooley and fighting for his PT tells me all I need to know about his desire to contribute and I'm sure that the same is true with the coaching staff....
I will root for him to succeed in a different conference, though. Well, as long as it isn't at USC...