When you think of Manchester United teenagers, you think of the Busby Babes and Fergie's Fledglings.
Unfortunately, the Munich air disaster leaves us wondering what the Busby Babes could have achieved.
Here's Alan Hansen's memorable criticism of Sir Alex Ferguson's youth policy during the 1995-96 season.
Fergie's Fledglings were an integral factor in Manchester United winning the double that season, and they won the UEFA Champions League three seasons later.
This article will only include Manchester United-produced players.