SAF was very careful giving debuts to young players. He was very careful in introducing them slowly to the team through mostly the league cup, fa cup or the last few minutes of a PL game. The exception was Rooney and maybe Ronaldo, though I remember Ronaldo was regularly on the bench in his first season.
Some of the comments regarding Ole here have been ridiculous. Lee will be introduced if and when the coaching staff and Ole feel he is ready. This won't just be determined just by what you guys see, which is the youth football. It'll also be based on attitude off the pitch and training sessions. Just let the young players develop and be glad that there is technology now that we can watch some of that development through the youth games. Calling for youth players to start is fine - but resenting and labelling incumbent managers when they don't is ridiculous and nonsense. I understand that there is a grey area in some cases, but you cannot seriously believe Ole has not given a chance to some youth...