I can see CAS being rather busy in the coming months!
I think PSG should be pulled up if the money is coming as rumoured via some iffy deal to pay Neymar 300m as a WC ambassador but that's for UEFA to decide. If PSG are just shelling out the £200m directly then La Liga should just shut up and take the money.
UEFA or FIFA? Transfers surely are a FIFA matter, they seem to be very quiet about this transfer? Additionally there appears to be two issues, one involving perceived way around FFP and the other is wholly a tax issue. If Neymar is being given the money to buy himself out, surely he has to pay tax on that somewhere?