Thats one exception really. Jese, Morata and Callejon all looked to have had bright futures there when they came through but they now have either been moved on or had their careers stalled. Even before them, I think the last players to come through and really make an impact there were Raul, Casillas and Guti!Varane.
It's a risk worth taking for him and Madrid, he either progresses and has years to do so before becoming a first teamer and if not, then he has a reputation and name just naturally from Madrid to get another good club down the line. One things for sure, 80k a week at 16 years old. Unreal. Just hope he doesn't lose his head.