His off ball movement is great. He always run without the ball. The problem of Osimhen is his first touch... That is Lukaku’s first touch... That you Utd's supporters already well know!
Salah is an exemple of a striker great in serie a and then great in premier league. Because he has the skills and the technique. In Italy you must search strikers with creativity, technique and dribbling. Example: Kvaratskhelia is word class in Italy and will be word class in England.
Buy in Serie A a physical striker with average skills is very, very risky. Because all the strikers with great physique in serie a are dominant, but in premier the physique without tecnichal skills is not enough.
Osimhen is a good player, but never, never a 100m striker. If you pay 60+ for him you get robbed. If Napoli, for exemple, the next year buy Tarem Moffi (Lorient striker, similar to Osimhen), in Italy he will be dominant as Osimhen.