Napoli is reportedly interested in signing Manchester United midfielder Kobbie Mainoo in the January transfer window. The 21-year-old has not started a Premier League match for United since May and has only made one start this season in a League Cup defeat at Grimsby Town in August. Mainoo had a brief appearance against Brighton last weekend, but manager Ruben Amorim is unlikely to give him regular playing time. As a result, Napoli may try to sign Mainoo to replace their midfielders who are leaving the team. Napoli's manager, Antonio Conte, is rebuilding his midfield after summer addition Kevin de Bruyne suffered a serious injury that will keep him out until next year.Manchester United rejected Mainoo's request to leave the club on loan before the summer transfer window closed, so it is now up to the club to decide whether to let him go. The success of other midfielders, such as McTominay and Hojlund, for Napoli has made it more likely that they will make a bid for Mainoo. Napoli's need for a midfielder is urgent, making a move for Mainoo a priority for the team.