This is the main problem with U21 teams everywhere. As managers are generally keen to keep their top players training until they no longer become viably trainable.
For example my team will only buy in new trainees when I decide to finally stop training Fred and others.
As I am a top team with winning as a priority I do not spend any money on the draft. Therefore the likelihood of me having an Australian trainee is limited. Unfortunately for the U21 team.
Good managers, unless hunting down Aussie players will struggle to keep creating Aussie young guns.
What we really need is an active set of people who are looking for young Aussie players on the transfer list during Draft Season. Now that we can search for nationality this will be a lot easier.
Hopefully I can get around to programming this NT Forum as well which will make it a bit more private than this forum (spies everywhere *waves*)