Manchester United midfielder Kobbie Mainoo has revealed the “one tip” he followed and how it helped him reach the big time at the Premier League club. Kobbie Mainoo has had a sensational campaign with Manchester United and become a key figure in the heart of midfield for manager Erik ten Hag. The 18-year-old Stockport-born midfielder was part of United’s pre-season last summer and Ten Hag had big plans for the youngster this season. However, Mainoo missed the beginning of United’s season due to injury before making his stunning return, with the Red Devils star since impressing for his side. Th…