Any football fan knows what a match between Real Madrid and Barcelona means. It's a fixture so important that it’s been dubbed El Clasico by spectators in Spain and around the world. Controversy always surrounds this historic Spanish rivalry, especially when players decide to switch their allegiances.
Surprisingly, there have been a good number of players that have made the switch from Barcelona to Real Madrid and vice versa. Now, with El Clasico looming, we look back to see the 10 best players to play for both Barcelona and Real Madrid.