Barcelona will play Athletic Club Bilbao in the Copa del Rey final on 30th May, with King Felipe VI handing the trophy to whistling Basques or Catalans.
Ahead of what will be his first Copa del Rey (King's Cup) final since ascending to the throne, following the abdication of his father Juan Carlos I last year, Felipe VI will be presented with a somewhat interesting scenario on May 30th, given the 2015 final will be contested between Athletic Club Bilbao and Barcelona.
When the players line up on the pitch for the start of the game, as is traditional, the Spanish national anthem will be played before kick-off. Past finals featuring either of the Basque or Catalan teams have usually resulted in the national anthem being drowned out by whistles.
In this next final, that's hardly likely to change, particularly given the recent Catalan referendum and bid for independence, which was met with wide support and solidarity from Basques.
Perhaps the most cheeky of snubs by fans came ahead of the Real Madrid versus Barcelona final at the Mestalla in 2011. As soon as the national anthem began to play, thousands of Barcelona fans in the stands promptly turned their backs to the pitch, dropped their trousers and waved their bare backsides, offering their own rather particular salute. A "Spanish" team would have the last laugh however, with Real Madrid winning the encounter 1-0 in extra-time.