Spain coach Vicente del Bosque concedes there's tension between Barcelona defender Gerard Pique and Real Madrid's Sergio Ramos.
Del Bosque admits there is lingering tension between not only the defensive pair, but also the players of Real and Barca within his squad.
The former Real boss said: "If Pique and Ramos do not get along, they'll be dropped.
"They are young kids with their differences, but we have no problems."