All three are, arguably, success stories of United's academy, but in different ways. Greenwood is impressing at French giants Marseille after leaving Old Trafford last year, Garner - who was in the forward's age group at the Red Devils - is proving his worth at Everton after struggling to make the grade at United, and Mainoo is already an England international at 19. For all of United's troubles, their academy can still produce top talent.