King is expected to see a majority of action at wide receiver again this season, although Applewhite said there will be a package specifically designed for him at quarterback.
Catalon, Dillon Birden, Mulbah Car and Patrick Carr will compete for playing time in camp.
"Can we run the ball from the tailback position on a consistent basis?" Applewhite said. "The rubber needs to meet the road and we need to do that to be an effective offense."
"Actually I was upset after a lot of games," said Oliver, who finished second nationally with 23 tackles for loss. "I actually didn't think I played well in a lot of games."
With Eloph out, the Cougars are expected to look at Auburn transfer Deon Mix at one of the guard spots. While defensive line is one of the team's deepest areas the loss of Carter, who made eight starts last season, is a blow, but the signing of Texas A&M transfer Reggie Chevis should soften it.