Napoli requested 20% cut fees from future sale of Osimhen. In example, If Galatasaray will sell Osimhen like 50m in the future, around 20% of that fees will go to the Napoli's pocket. I think that is unacceptable for sure.
I think Galatasaray has given Napoli a considerable offer. It's now up to them to make the final decision. How would they ask for such a future sale percentage from a club that is even struggling to raise funds to complete the transfer deal? The Turkish side deserve to receive 100% of the funds that will be realised from the future sale if Osimhen so that they can gain from thier investment.