Spain managed to get a lot of good players, and they should be thankful to Barcelona once again, they are bringing in so many great talented young players, mainly Yamal that kid is basically 15 years of right wing for Spain that is not a simple thing to achieve and they did that, which is awesome and I believe without a doubt the best talent to come to Spain in a long long time.
Right now he is said to be injured, I feel like he is not really injured but they are playing a lot of games during a season so maybe Barcelona just wanted to rest him, dude played all year last year and then played at euro during the summer for Spain, and then started the season back up again, he didn't had any proper resting, so during the season he has to be rested and that's why Barcelona is probably doing right now. That's sort of injury too, saying "if I do not rest and play, I will be hurt worse" is injury, resting will make that better and he will get back to playing for club.
I don't think they managed to get those players, but they actually deserves those players. After the era of Ramos, Iniesta, Xavi and others, we where quite concerned with how they will get the next talent, but all of a sudden, talents started springing forth from different clubs. It's very true that barce have been doing a great job in terms of producing talents, and the amusing thing is that yamal won't be the only young talent that we will see. I believe we all know curbarsi(17years old) that plays as a CB in barce. That's another talent that i've enjoyed watching. we also have talents like Balde and Torre that i believe will find their way into the spanish national team replacing older players like laporte and others.
We haven't seen much from madrid lately, but i believe they might have some of these talents in their academy that are waiting to be promoted. And just to add, Yamal is actually 17 and not 15.