Spain coach Vicente del Bosque has made it clear he will not hesitate to call up 14 Barcelona players in the future if that would be in the team's best interest.
The 61-year-old included eight Blaugrana players in his squad for the friendly against Panama last month, and he has insisted that several more Barca players could make the cut in the not too distant future.
"We took eight Barcelona players to Panama and [Carles] Puyol, [Gerard] Pique, Xavi and Thiago [Alcantara] were all missing," Del Bosque was quoted as saying by Marca.
"[Cristian] Tello, who is one step away, wasn't there either. And look how [Gerard] Deulofeu is coming on. If we need to call up 14 Barcelona players one day because they deserve it, we will not hesitate to do just that.
"However, Real Madrid also have a strong base of national players at the moment."
Madrid currently have Iker Casillas, Alvaro Arbeloa, Raul Albiol, Sergio Ramos and Xabi Alonso in the Spain squad.