Very disappointing.
Can say all you want about lose some, gain others and all that, but for the last few years we're only losing talented players.
Can't just be players looking for greener pastures. Perhaps they don't trust the La Masia management higher up anymore as Grimaldo touched upon.
The kid is 16. That's typically the age where we find out if a La Masia player's loyalty truly lies with us. Nothing that can be done about it. Grimaldo's comments had more to do with the first team (More precisely, Lucho, and he was right) than anything. It's hard to believe the kid who made his Barca B debut at 15 has complaints about La Masia management not trusting young players.
Garcia leaving is a blow but it's not as if we're doomed without him. There will be more talent coming through, there always has been and there always will be.
Edit: Remember Sergi Canos and Tonny Sanabria? Our brightest forward prospects who both left for the money. Now one is in the 2nd division of England as a backup and the other is a backup for Betis, while Sandro is going on to play for Atletico in January. Even Grimaldo leaving was a massive blow but out of basically nowhere Cucu exploded when promoted to Juvenil A and is expected to be a first team player within 2 seasons.