It should be an easy "no" under normal circumstances, but given that the staff has seen fit to only play one RB (Coker) all season after McCall went down, I don't know what the right call is here. Medically I doubt his ankle can take the stress and strain, so he may not be cleared. Even if he is cleared, the staff will limit his carries (rightly so), so why burn a RS year for the last half of the season with limited duty?
Better answer is get Canizeri, Bullock, Rogers, Johnson some freaking PT so we aren't in this situation again next year. This staff puzzles me with their stranglehold on PT at certain positions. Coker does a decent job of north-south running, but isn't good for the stretch.