(CBS) Bears cornerback Marcus Cooper is experiencing back spasms and has been listed as questionable against the Vikings in Monday’s primetime contest, coach John Fox announced Saturday at Halas Hall. Linebackers Willie Young (tricep) and Nick Kwiatkoski (chest) are both doubtful to play.

Cooper has been a part of a three-man rotation at cornerback, working alongside Kyle Fuller and Prince Amukamara. The absence of Kwiatkoski would come as Danny Trevathan is suspended for a hit in the loss to the Packers in Week 4.

Young was limited in practice Thursday and was held out Friday and Saturday. Fox declined to shed light to Young’s status moving forward.

The Vikings have injury issues of their own, with quarterback Sam Bradford’s status uncertain for Monday night as he deals with a knee problem.