Let's see what he does.
Yesterday I was watching the Liverpool game and some of the Dutch folks said something interesting: the most successful coaches were mediocre players at best. They had to start at the bottom, build up a lot of experience and look at the game a bit differently.
Arne Slot is like that. But when you see all these superstars going into the coaching game, expectations are sky high, they can start off at huge clubs and they usually don't do that well.
Maybe it'll be good for Frank to have a look at Coventry, see what he can do there. Maybe if he's in his 70s he'll be able to get Chelsea for a few seasons.