Not sure if it is valid to count for two seasons but if we count 19/20 season and 20/21 (for now) we are around +100m in net spend on transfers. This is with Ziyech and Werner.
Also if reports are true we will pay now 65m pounds for Havertz and 45-50m for Chilwell. Bonuses and add ones come in next years... And we get Silva for free I hope.
So if we add Boga money and loan fees we are even with them close to zero. And we still need to sell Michy, Emerson, Bakayoko, Barkley and others... So this could be another 100m to spend on Rice, Oblak?
And if Rice is coming I imagine Jorginho would be sold to Roma?
So I think after Ziyech, Werner, Chilwell, Havertz and Silva we are still not finished with buying new players. If we sell all the deadwood we can easily buy two new players.