My understanding - perhaps incorrectly - is that while Poch and his staff have been 'removed from their duties' they are still on the payroll and have therefore not received a pay-out. So there would be no money to be returned to the club. However, there would potentially be a 'transfer fee' to be paid to the club if another club wanted to employ him.
I'm sure Man U or Real would compensate MP with a signing fee to cover his losses and happy to do so as his antics have also saved them a £34M 'transfer' fee.
If they can pick him up for free next summer, that is very generous of Levy.
However, I suspect MP is being paid in instalments, and it will still cost them about £9M next summer and £6M the year after.
Or MP can always write off the £12M and go where he likes.