Manchester United sensation Kobbie Mainoo made his first ever start for England, selected in a friendly against Belgium. This was just Kobbie Mainoo‘s second ever England cap, following on from his international debut against Brazil. It has been atruly remarkable rise for the 18-year-old, who only started his first Premier League game at the end of November. Mainoo has been a regular for Manchester United ever since, and now he has made the step up to international starter. READ MORE: Who is Kobbie Mainoo? Inside the life of Man Utd’s rising star, including his parents, brother and school Kobb…