I'm trying to find solice. This is all I've got...
With what we know of how our coach thinks and comes up with new tricks for each game, I would not be surprised to see Bell get some carries. A few of them in short yardage situations. Simple stuff for any running back to understand and execute, run right, run left, run middle. All of this to set up Bell for a halfback option to Graham. New guy has no clue about the playbook so if he is in, it obviously is a run play, perfect setup. His 4 TD passes in college prove he can throw it.
Not saying I want it to happen or that it is even likely but it is the kind of chicanery Payton is capable of.