I hope he continues to have a stellar managerial career and I don't know why, but I think he'd do well to have success along the lines of what he has achieved at BDTBL.
I'm not saying it is out of the question but IMO I don't think it will be a PL club. If that leaves it to a club in the Championship then they are going to have to have a very healthy budget (either a recently relegated PL club with parachute payments, or just a very rich billionaire owner) because ultimately this is why he has left us, it all boils down to the money in one form or another.
If not a rich Champ club but a steady one similar to us then it won't make sense him leaving us in the first place!!!
I'm sure if someone had asked him five years ago when he was a manager in League Two how he would feel about managing his boyhood club and in the PL he'd have not believed it! Even if the club can't guarantee him managing us with every single principle of his intact surely he'd have still snapped your hand off for managing SUFC in the PL? Surely?