Mainoo wants to join another team on a temporary basis to get more playing time, but he does not want to leave Manchester United permanently. He hopes to earn a regular place in the first team.
Manchester United has rejected Mainoo's request to leave on loan, and the team expects him to continue competing for a spot in the team.
Manager Amorim is under pressure after Manchester United's loss to Grimsby, a team from the lower league, in the Carabao Cup.
Several top European clubs, including Bayern Munich and Bayer Leverkusen, have shown interest in Mainoo and have made contact with Manchester United about a potential loan move.