Manchester United manager Erik ten Hag has praised Kobbie Mainoo after the midfielder’s superb performance against Luton Town at Kenilworth Road on Sunday. Kobbie Mainoo has been a breath of fresh air in the Manchester United first team this season and the teenage sensation has enjoyed a successful campaign. The 18-year-old Stockport-born player has firmly established himself in the United midfield under Erik ten Hag and often impressed fans with his performances. Mainoo has made 11 Premier League appearances for United and has started in all 11 fixtures, with the United star exhibiting incred…