I'm a couple of months into my first season and I'm noticing that my youngsters are already showing poor fitness (in the 60s). I think they're playing too many U18s/U21s matches. Their training workload is light and I'm trying to get the U18s manager to rotate them as much as possible. I fear that my youth squad might be too thin for the season and I don't want to risk them getting injured as that will obviously be a big set back in their development. I don't have much coin in the bank to pickup some other youngsters to add some depth - What are my other options? Can I force the club to bring in those "greyed out" players, just so I can give my players a breather? I have told several of them to take a rest, but I think that only applies to training.
If I promote the tired players to my senior squad and let them sit there for a bit until they get their fitness levels to a reasonable level, will my youth setup automatically bring in players to fill the positions that are without a player? Are there any other options that I'm missing? Thanks!