In fact I think the answear is simple.. there are very few active managers and than you will only get very few players than have great poteintal. Another thing is most likley training, every player in u21 national team has getting 1 postion training.
I will work on saveing players that can make it to the u21 national team or later the A team. I will also work with every manager who wants help with there training setup and find way make it effective for both teams. OF course I will work very hard with good poteintal guys. This work will not show up on 1 season... you will see something happens in 3-4 seasons
Regards hofdinginnn