Reggie Bush will undergo an MRI on his knee

Lions running back Reggie Bush will undergo an MRI on his injured knee.

After Sunday’s loss to the Cardinals, He didn’t seem like he’s too concerned.

“I’m not too concerned,” Bush said, via the Detroit Free Press. “We’ll see how it goes tomorrow and take it one day at a time. I’m not too concerned, though. I think I’ll be all right and I’m going to do everything I can to get back on the field Sunday, even if I have to rehab 24 hours a day.”

Bush has been a great addition for the Lions this season,  they can’t afford to lose him for an extended period of time.