When was the last time United actually brought someone through the academy system?
I guess it depends on your criteria. There are a number of academy graduates in the current united squad: Rashford, Lingard, Borthwick-Jackson, Blackett (Celtic?), McNair, but none of these are what you might call well-established. Do you count players like Januzaj or Paul Pogba who signed to united’s academy from other professional clubs at age 16? There are a few ex-united academy players at other Premier league clubs like Ryan Shawcross, Frazier Campbell, Darren GIbson, Danny Simpson.
But I guess the best example of someone being at united from a young age, getting established in the team, gaining international honours etc would be Danny Wellbeck? can’t think of anyone else more recent.