Less progress in training for youth players?

Hello guys,

I'm pretty new here and have a question.
Yesterday i got my first 2 youth players and kept the weaker one, for using him as a backup.
He is 18yr, 2*.
My problem is, that he is getting just around +11 for stretching, and other players at his age are getting a multiple amount of points.
Is this just "normal" for 18yr players or where is the mistake?

Any ideas?

First day with you most players are slightly down on players of a similar age, rarely gain a skill point just in training give him another day of training.
If that fails, you might need to get him interested, try a couple of short appearances off the bench.
Or if you have a game against weaker opposition give him a game, might just spark a reaction.
Failing that train him hard for a day or two then sell.

I gave him one short appearance yesterday. Today the training is still very weak. He gains so much points (+12) für stretching as a ten years older player does.