Get rid of OU and play UNC instead. We will play OU plenty.
I highly doubt that game ends up happening. Even if the SEC doesn't expand until 2025, Oklahoma's portion of the home-and-home was lost to the COVID-19 season; why would the Sooners come to Knoxville and play an OOC game a year before joining the conference, sacrificing a key home tilt in doing so?
Give me another Battle at Bristol (Virginia Tech, Clemson, Louisville or UNC) or a neutral site in an unusual city (Maryland in D.C. or Utah in Las Vegas, maybe) if Danny White isn't able to negotiate a P5 buy game/home-and-home where the return leg is 7 years away.