For Chelsea and Man Utd I totally agree but not for Galatasaray not because I don't believe in Galatasaray financial ability but by making Osimhen permanent there is a possibility that it can damage their financial balance moreover on the other hand I feel the Turkish league is not suitable for Osimhen development. In the previous transfer Chelsea were very close but were blocked by the price and now the price has dropped quite significantly, this could be an opportunity for them to recruit him again, by the way why didn't Arsenal join this hunt? they need a reliable finisher.
Galatasaray is reportedly optimistic that Osimhen will stay there for next season. But it seems that the seriousness is currently directed at United, who are reportedly ready to exchange one of their players for a large amount of additional money. We have not yet reached the final stages of the Osimhen transfer. Although the price is quite expensive, it seems that the club's interest in him has not diminished. He deserves to find the right club.
Arsenal must have considered the price, they have seen how Napoli persisted in the transfer market last season. They probably think it will not be much different from the current situation.