Saturday's Copa del Rey final provides the third – and most high-stakes – edition of El Clasico this season and though the opportunities for both sides have been plentiful, there has been one theme so far this campaign – Barcelona's sheer dominance.

Real Madrid and Barcelona will do battle in Seville on Saturday night in the Copa del Rey final, and rightly or probably wrongly, the referee will be at the centre of attention. However it is the

The big two of the Spanish game meet up for the final of the Spanish Cup at the Estadio de la Cartuja in Seville.