Various notable players have featured for both Barcelona and Catalan capital rivals Espanyol over the years, including Simao Sabrosa, Steve Archibald and Jordi Cruyff. Yet none of them make this list.
Alfredo Di Stefano turned out for Barcelona after they signed him in 1953 before later playing for Espanyol, but it wasn't in an official game, so he misses out too.
Here we've selected five players based on their ability, with the proviso they played for both sides for at least 40 games combined. Here's the rundown.