Ride with what they’ve got
The first option, which many may not like, is the Bears could just utilize the four backs on the team and create a committee with them. This would save the Bears money and we could see more of guys who wouldn’t see the field as much if Montgomery would get hurt.
Cohen would likely still be doing the role he currently has while picking up a few more carries. His role is cemented no matter who the Bears target and even if Montgomery remains healthy. His ability to make people miss in space and ability to catch the ball make him locked for a role.
Patterson recently converted to the running back position and apparently has looked to be a monster at that position. This could be his opportunity to show the change-of-positions was the right choice for the veteran who has never seemed to find a spot on any offense.
Pierce likely won’t see the field much as he is a rookie undrafted free agent, but his measurables look promising as does his film. If he sees the field because of this, maybe he could show what he really can do well.
Nall is the other undrafted free agent who was pulled up after Mike Davis was cut last season. He didn’t carry the ball much, but he has looked solid as a runner during the preseason before and he could contest for carries as well.
Clearly, this isn’t the best option, but if the injury is minor, this is what we could see.