The fabled "Class of 92" had a famous tussle with their senior counterparts in order to measure their progress.
"I used to threaten Bryan Robson all the time and tell him the 1992 team would beat you," revealed Sir Alex. "We did have a practice game together, the first team versus the Class of 92.
"The first team won 3-1 and Robson was in one of his angry moods. He was very determined that day! It was brilliant, they were absolutely revved up for it and the young boys were thinking: 'Why are we doing this and can we beat them'? There was an element of doubt in them and I think there was a lot of intimidation going on. I can't remember who was referee but it wasn't me!"