Osimhen is a great forward and for Manchester United's attack this will be a good move, I am just surprised that he agreed to play for a team that could potentially be left without European Cups next season. But if you compare the Turkish League with the Premier League, then everything becomes clear, he chooses a stronger championship. Galatasaray showed that they cannot compete with European teams, this could also play a role in his decision.
Osimhen has suffered a setback after getting into trouble with Napoli which ultimately led to him being loaned out. His transfers have always had problems before so they could not be realized properly. Some people think that his price is too high and the salary he is asking for is too big so some teams have cancelled their recruitment. Rather than staying in the Turkish League and no other team wants to recruit him, it would be much better to move to Old Trafford in an effort to regain his best momentum.
Now is the right time for him to show his skills again and Manchester United are the right team because so far they have not had a striker who has the best instincts in scoring goals so his presence can help the team to be better.