To be honest, i find pretty unfair all the hate casillas is getting, when if you look at it only the third goal against holland is totally his fault. Spain has no defense at all. Also for those saying that hes living of past glory... didnt he just broke his own record of minutes whitout goal in Real Madrid? If you even watched any of his games besides the final you would see that hes still a pretty good kepeer.
De Gea will eventually be Spains #1, but lets not forget that he has also commited some childish mistakes, and the presure of playing for Spain at the World Cup after that first game could've been too much, in four years he will be there. On the other hand im not really sure why Reina is even on that squad, maybe hes the clown of the group?