dcturk10 wrote: Will it alter the players growth?
No, it won't.
You can send them to YTC , as @theloyalone suggested, or you can send them on TC of Speed, Stamina, Ball Control, since these are important skills for any player.
The main skill can be found later, as senior.
If they don't reach 7 balls in each skill and stay unmaxed, it is hard to believe that the player can be useful in the future.
Just my opinion H