By Madison Williams The Panthers quarterback underwent an MRI on Monday to determine the severity of his injury. Panthers quarterback Baker Mayfield reportedly suffered a high-ankle sprain during Sunday’s 37–15 loss to the 49ers, per NFL Network’s Ian Rapoport. The starting quarterback underwent an MRI on Monday to determine the severity of his injury. He is expected to seek out a second opinion to gain clarity on how long his recovery should be. As of right now, the injury will sideline him “at least a couple weeks,” per ESPN’s Adam Schefter. If he is placed on the injured reserve list, he wi…