Panthers head coach Dave Canales said both players would get tests when they got back to Charlotte, and offered no updates in the moments after the 27-22 loss to the Cardinals.
"Football sucks, but I love this game so much," Corbett replied when asked what he thought when he went down late in the second half. "Just immediately, just staying positive. I don't know.
"I just told the docs we'll figure it out tomorrow, so get an MRI and go from there."
When he was asked if the fact that he was standing there under his own power was a good sign, he shook his head.
"No, I did the same thing, walked off the field when I tore my ACL," he replied. "You never know. We'll figure it out.
Corbett has been plagued by injuries since that ACL tear in the 2022 finale, including an MCL injury in the same knee after his comeback, and a torn biceps tendon last year that ended his season.