Assuming we hire a young offensive coach, we will need an experienced defensive play caller - which will consist of fired HCs and DCs (likely won’t have an up and coming DC. A lot of fired HCs end up as defensive coordinators: Dan Quinn, Brian Flores, Vic Fangio, Rasheed Morris (interim), Steve Wilks (interim), Jack Del Rio (lol).
Candidates: Belichick (no shot), Brandon Staley (runs a 3-4), Ron Rivera (intriguing), Todd Bowles (not sure he gets fired), Jack Del Rio (lol)
Mike Zimmer if he’s receptive to a DC position. He’d also pair well with a young, offensive minded head coach since he could run that entire side of the ball.
Furthermore, Zimmer would be able to help Poles identify talent in the draft, something that I think Eberflus and Co. have struggled with for their scheme. Shit on Fox all we want, but he was crucial in getting some of that good defensive talent early-on during the Pace regime.