Rex is the first one that comes to mind for me because he’s currently available and has HC experience. I also believe Staley will likely be fired after this season, he’s a good defensive mind thay could keep us top tier.
Whoever runs defense I really believe we need to switch to a 3-4. Cam and Bresee at DE, rotate Saunders and Foskey with them. Roach and Shepard can handle the NT. That should help Cam more as he continues to age, or move him inside to DT if we keep 4-3.