In an article from last August, Saban said McCullough was one of the best 50 players on the team. They have been having trouble getting him on the field as a defensive lineman, so in the summer the were experimenting with him playing Offensive Guard. I haven’t seen an update on how that experiment was going.
I still don’t think we are 100% sure if Williams will play DE or TE. With his size, my guess is he will take over the blocking TE role from McCall next season with Smelley taking over as the pass catching TE from Walker.
Just the little bit I’ve heard about them. Someone else probably knows more.