I think it's pie in the sky to think we will pay the kind of fees that Costa or indeed Maignan will cost - at least in the Summer. A high concentration of our transfer budget is going to be paid on striker and centre mid and then we'll be searching in the bargain bucket/free agents/loans for goalkeeper, right back and centre back if we can even get around to addressing those positions in summer. I would kill for Costa's play making from gk in our team though.
Thats understandable given our current needs and what we spent last summer. FFP will also provide its own difficulties because I think we are forgetting that the summer before last we also spent a big amount.
However I also think that if we sell a number of players (Maguire (30m), AwB/Dalot (20m), McTominay (30m), Van Der Beek (15m), Telles (10m), Bailly (5m), Henderson (20m)) we could get about £90m to £130m. Then I can see us going for a striker that costs around the £80m (Ramos/Muani/Ferguson), there is talk about us being in for Kokcu who is expected to cost £45m bringing the total cost of the summer essential signings to £125m.
After the striker and CM signing, which we can fund from our own resources before sales, we can absolutely afford a £60m keeper, a £30m RB and a £40m CB if we really pushed for it. My assumption is that we will avoid to compete on Osimhen and will be wary of spending the whole summer chasing after Kane or FDJ.