By Katie Catherall Manchester United aren’t believed to be in a rush to secure teenage midfielder star Kobbie Mainoo to a new contract due to his current deal running up to 2028. 18-year-old Mainoo has recently become a regular starter for his club, enabling him to then earn a senior England call-up to join Gareth Southgate’s squad against Brazil and Belgium. Mainoo last put pen to paper on 9 February 2023 when he had only made one first-team appearance, signing a contract for four years with the option of a further 12 months. His status has changed massively since then. But the Manchester Eve…