Thanks, there may be U18s but I don't think they will have both a U21 and U18 team. My son plays for the League 9 team I am playing and they only have a U18 squad not an U21. When I do a Gillingham save, they only have a U18 in league 2 which I think is the common one.
Wil give it a try and see if it works out. Thanks for the tip.