Speaking to the media ahead of Spain's Nations League clash against Switzerland, De La Fuente said: "The calendar is set by the clubs, UEFA and FIFA, not by us. We just comply with what is established. And it's curious: all the players, all of them, want to come to the national team. And all the clubs, all of them, want their players to come to the national team. I say this with full knowledge of the facts.
"We are victims of the calendar, not responsible. We should give the importance that it deserves to represent your country.
"If a player can't play two full games in September, that's all. And if I only protected those who were from a particular club, it would be very unfair. In general, this matter is quite unfair. I will put in those who I think are the best."