You have two brilliant young players but the roster slots on the U21 team can be very tight. Your guys time will come. Your 20 year old looks very close to making the team this season and maybe will at some stage but certainly next season at age 21 he will be a star. Your 19 year old also looks great, I don't know if he would make it at age 20 but surely at age 21 if you train him he will be in. Players have to be quite special to make the team before age 21.