Certainly Mullen thought a lot of him initially to let him catch punts as a true freshman on a very good team. Him getting lost in the shuffle after that, I don't know whether Mullen didn't utilize him correctly and whether Graham maybe didn't progress like he should because of immaturity, but I find it hard to believe his potential wasn't much higher than was realized based on Mullen's initial evaluation of him.
Hopefully he makes it.