Except there are barely any of them in the league. The majority of teams are made up of 17-19 year olds. Sure some games will get rough but so is senior football and so is u18s at times too. There are dirty feckers at all levels and if he isn't used to it now then he'll need to get used to it.
But he'll be looking at those he played with last year like Bohui, Buffonge, and Boonen, who were so successful together and wondering why he isn't still with them. Bohui and Boonen are also in the u19s squad so shouldn't he continue playing with his attacking partners? Hard to blame him if he is not happy with being held back. Also hard to blame him if he isn't happy with his season being based around one competition which is only guaranteed 6 matches, 1 of which he'll miss at the world cup.