Update (Wednesday, 11:50 AM ET): McNichols is out for the season and facing potential surgery, according to Ian Rapoport of NFL Network.
Update (Tuesday, 4:02 PM ET): The Redskins are placing McNichols on injured reserve, according to Ian Rapoport of NFL Network.
Update (Monday, 7:20 PM ET): Jeremy McNichols is expected to miss multiple months with his foot injury, though he is getting additional opinions on it Tuesday, according to Tashan Reed.
Redskins RB Jeremy McNichols is undergoing additional testing for what the team is concerned is a significant foot injury, according to Adam Schefter of ESPN. Coach Dan Quinn said McNichols has a "mid foot" injury, that he is concerned it is serious and that McNichols will get more scans Tuesday, per John Keim. Quinn added the team will consider bringing in running back help if it proves serious, per Tashan Reed.