However, with doubts surrounding United's willingness to let Mainoo go in the middle of the season, Napoli is exploring other options.

The club is also considering West Ham's Soungoutou Magassa, a defensive midfielder, as well as Johan Manzambi from Freiburg.

Napoli is also keeping an eye on Bayern Munich's Leon Goretzka and Atalanta's Ederson, who could potentially join the team.