I don't think Musiala will go to Barcelona because Barcelona is in a critical period financially right now. They can't afford the transfer fee they will pay him, and the player has receivables. Considering the contract and bonus clauses, they can't afford the large salary they will give him. I think he should continue his career with Bayern Munich. Barcelona may not be the right decision for him, as I said, Barça doesn't have the money to buy him anyway.
Musiala looks happy with Bayern Munich, he has a great season there. I'm very sure that he won't consider leaving Bayern Munich in the near future. Unless he has a problem with coach, Bayern management, or players, he has no reason to leave Bayern Munich. Also, Musiala doesn't need to move to Barcelona if he only wants to win domestic trophies, it looks easier to win with Bayern Munich than with Barcelona. Moreover, he must get lower salary at Barcelona, everyone knows that many of Barcelona gets a cut of their salaries because of the financial crisis in Barcelona. And they last thing, sure it won't be easy for Barcelona to sign Musiala because it must spend a lot of money.
I've heard it's down to 63M now. So now Chelsea can sign him?? lol, Actually Chelsea insults him a lot, so there is no chance of him going to Chelsea anyhow. I think his demand may be increased it will depend on his performance, he just need to perform well with the Turkey team.
If we look at his market value, it is still €100m. But it is very possible that Napoli decrease the transfer fess around €63m because no many teams are still interested to sign Osimhen. Now, Osimhen has a contract with Galatasaray until Jun 30, 2025. There is no way that Chelsea to sign Osimhen in the near future. By the way, it is no doubt that there will be many teams interested to sign him anymore if he can perform well with Galatasaray. He must try to play as well as possible if he really cares with his career.