Again: where are these many teams interested in Oshimen? Not even on loan, there are no big teams interested on him. That's the truth, it seems to me that some people don't want to understand the obvious. The big clubs are not interested in him, at least I'm not seeing it at the moment.
I didn't mention anything about many clubs. I am not speculating on what may be going on behind the scenes or who is submitting an offer. There's still many days to go in the transfer window.
Maybe the big teams don't see Oshimen as a player worth spending a lot of money on, looking at his performance, his success was at Napoli and Galatasaray, that may not be enough for the big clubs in his view.
He helped Napoli to their first scudetto in many years and also a good ucl run, that was a very impressive season. And players are signed every time from smaller clubs to bigger teams, so that should not be an issue.
You are also slightly getting his name wrong. I bolded the correct spelling in my earlier response.