Bagni, who also won the Scudetto during his time at Napoli, understands that the Nigerian striker could potentially be on the move this summer.
Osimhen has garnered significant interest from top clubs, and Bagni believes that a move to Manchester United would be appealing to the talented forward.
Bagni said: “Victor Osimhen won’t return to France because he already played there. The same thing with Germany.
“He doesn’t go to Liverpool or Chelsea because they do not play the Champions League.
“Of all the teams associated with him, for me, he would only go to Manchester United and Real Madrid. He’s not interested in the other teams.”