It has been known for players from Barcelona to cross the Clasico divide and head to Real Madrid.
Luis Figo was one who completed the ultimate act of treachery by signing terms at the Santiago Bernabeu, but during Real's 3-2 defeat to Sevilla on Sunday, one Blancos support took things to another extreme...
...brandishing a shirt with Lionel Messi's name and number on the back.
Messi has spent his whole footballing career at the Camp Nou and, while Barca fans were angry enough to throw a pig's head at Luis Figo upon his return in a Clasico, what would come the Argentine's way?!