I doubt that this case would serve as an example for any other player. I wish you were right about it, but money is reigning everything. If Napoli offers a player a great opportunity with high salary, I don't think they would ever say no because they remember what happened to Osimhen in the past.
You can already see how the blame game works. Napoli blames Osimhen, Osimhen blames his agent and Napoli, Galatasaray blames Napoli, but if the deal is finished they will talk well about each other. It is going back and forth between everyone. This will be forgotten about in no time unless this escalates once more and I doubt it will because Osimhen won't leave as a free agent.
Assuming that Osimhen would threaten Napoli to leave next year and accept to not being nominated for the team while still under contract with Napoli, then it could get out of control. But he won't do that, he wants to play even if it is in Turkey. He is in the middle of his best years and would probably be willing to avoid drama if he can.
Osimhen has the quality to easily play for a major club, but the major clubs aren't making any moves to sign him. I believe the money being discussed behind the scenes is the biggest factor in this situation. Galatasaray wants to sign Osimhen, Napoli wants to guarantee payment, and the process is dragging on. Social media is buzzing about this transfer every day.
I'm curious about how this transfer will unfold and what will happen next. This process seems to be a difficult one for players and teams, but for a player like Osimhen, going through a difficult process is acceptable because he is a player of the quality that every team would want.
€75 million in total is not that much for any of the major clubs. It's probably about the position being free and going through most of those major clubs, I don't know wich one us currently looking for a center forward like Osimhen.
You can exclude Serie A clubs because Napoli won't sell him to any of their competitors. So far this is one of their conditions to agree to a transfer. Then there are a few clubs that could pay this fee without any problems. Real Madrid could be thinking about it, but so far they wanted Mbappe to play that position. Bayern has Harry Kane, Inter Milan is Serie A, Man City has Haaland, Liverpool bought new players for their attack, which makes it less likely that they would want another one. PSG is not interested, Barcelona is not interested.
Could Arsenal be interested in Osimhen? They could pay the money and they finally need a center forward who is not injured a lot and who scores goals in almost all games. The EPL is not like the Turkish league and Osimhen would still have to prove he can play on the same level there.