Did a small research on the players brought in from the youth academy during Fergie's last five seasons at the helm. I listed their current clubs:
Tom Cleverley: Manchester United
Jonny Evans: Manchester United
Danny Simpson: Queens Park Rangers
Lee Martin: Millwall
Fraizer Campbell: Crystal Palace
Sam Hewson: Fimleikafelag Hafnarfjaroar (Iceland)
Craig Cathcart: Watford
James Chester: Hull City
Ben Amos: Manchester United
Richard Eckersley: New York Red Bulls (USA)
Corry Evans: Blackburn Rovers
Danny Drinkwater: Leicester City
Matty James: Leicester City
Danny Welbeck: Manchester United
Federico Macheda: Cardiff City
Joshua King: Blackburn Rovers
Magnus Eikrem: Cardiff City
Oliver Gill: Retired
Joe Dudgeon: Barnsley
Cameron Stewart: Ipswich Town
Oliver Norwood: Reading
Robbie Brady: Hull City
Nicky Ajose: Leeds United
Ryan Tunnicliffe: Wigan Athletic
Will Keane: Manchester United
Ravel Morrison: West Ham United
Sam Johnstone: Manchester United
Paul Pogba: Juventus (Italy)
Tom Thorpe: Manchester United
Reece Brown: Barnsley
Marnick Wermijl: Manchester United
Davide Petrucci: Manchester United
Sean McGinty: Rochdale
Zeki Fryers: Tottenham Hotspur
Larnell Cole: Fulham
Jesse Lingard: Manchester United
Scott Wootton: Leeds United
Tyler Blackett: Manchester United
Frederic Veseli: Port Vale
Out of 39 players, only 11 of them are currently with United and in those 11 are Will Keane, Sam Johnstone, Tom Thorpe, Marnick Wermijl, Davide Petrucci and Ben Amos, who don't seem likely to stay with United for that long. So you have Jonny Evans, Tom Cleverley, Danny Welbeck, Jesse Lingard and Tyler Blackett.
Out of guys who are no longer with United, Paul Pogba is a world class player and obviously a huge mistake. Ravel Morrison, Robbie Brady and Frazier Campbell look like other guys who could have a shot with United, but not really.