I wonder why we struggle to develop a top prospect CBs in house in comparison to other teams? La Masia obviously has a great reputation in developing players but when it comes to CBs/Defenders we aren't doing as well in that area.
Look at our La Masia starters in the last 20-ish years:
Gk: Valdes
Cbs: Puyol, Oleguer, Pique
Fullbacks: Sergi
Midfielders: Guardiola, Xavi, Gabri, Motta, Iniesta, Busquets, Thiago, Fabregas, Rafinha
Attackers: Messi, Pedro
** I forgot Pique, so we actually had 2-3 good Cbs.
But still, look at the amount of midfielders, and then the amount of defenders, fullbacks and attackers.
It seems that La Masia's style of training kids is suitable for creating Barca's midfielders (probably because of tons of technical-based trainings with passing, movement, triangles and similar).
With Cbs or attackers, we are just meh.