Mullen needs good players at fullback and tight end or he will struggle. To me I think the bigger problems will be on the Oline, but if Meyer is right (which he usually is) thats not good.
I think we are pretty deep at TE depending on the Green arrest outcome. We are not nearly as deep at FB, but the worst case is that we have to line Dixon up as a "FB" and have Ducre or Elliot at the HB spot.
there are no returning fullbacks. The walkons looked ok at the spring game, but I'm not counting on walkons to be good. I have no idea how good Shumpert is. At tight end I can't even think of anyone besides Marcus Green. He should be good enough, but we need more than one.
Then we also have Henderson who has game experience. We have decent TEs. Fullback is another matter. Noone with experience and we have 2 walkons and a freshman.