Gillislee (concussion) returned to practice Tuesday and said he is no longer in the NFL's concussion protocol, The Buffalo News reports.
While only listed at No. 3 on the preseason depth chart, Gillislee would seemingly be next in line to serve as the lead ball carrier if LeSean McCoy were to suffer an injury. Running back Reggie Bush is expected to have a more receiving-oriented role, perhaps even mixing in with the starting offense while McCoy is also on the field. Rookie fifth-round selection Jonathan Williams (ribs), who missed Tuesday's practice, could eventually push for Gillislee's spot on the depth chart. If McCoy were to miss time, the Bills would likely deploy some sort of committee, though as of this second Gilleslee probably makes for the best McCoy insurance policy.