It looks like you are correct. However, it also looks like they will still struggle to abide by FFP with the signing of Neymar alone. Signing Mbappe would put their expenditure at £350m, ammortised over the next five years. Add the embarrassingly large salaries of Neymar, Alves and Mbappe... That would probably amount to something in the region of £1.5m/week before tax or £78m per year. Amortise the transfer fees over 5 years and you get £70m/year. That combines to £148m/year in addition to what they are already spending!!!
I really don't see how they can possibly justify any extra income to cover this kind of money.