I think the Mayfield question is more complex than even performance. It will depend on Tepper's level of micromanagement and what the direction of the current/next coaching staff is.
If Tepper is/was a Baker guy, I think Baker will be here. If the next coach is a Baker guy, he will be here. But if Tepper isn't a Baker guy and Rhule/new coach aren't Baker guys, he is gonna be gone.
It would probably take an All-Pro performance in 2022 for the latter opinions to change.