Seems like a high ankle sprain:
"Von Pearson and Ethan Wolf may be back to Tennessees lineup sooner than expected. According to GoVolsXtra, Wolf has a bruised right knee and Pearson a possible sprained left ankle, per sources familiar with the injuries. The source spoke anonymously Sunday because the injuries have yet to be officially announced to the public. Both players suffered injuries during Tennessees 34-19 win over Arkansas State Saturday and did not return to action."
Per SDS. They were right about Wolf.