Alfonso Albéniz was the first player to play for both clubs, he joined Real Madrid from Barcelona in 1902.
Juan Hilario Marrero
Juan Hilario Marrero turned out for Real Madrid from 1931 to 1936, later spending the 1939/40 campaign at Barcelona.
Legendary goalkeeper Ricardo Zamora was at Barcelona between 1919 and 1922, before going on to sign for Real Madrid in 1930.
Josep Samitier played for Barcelona from 1919 to 1933, before swapping Catalonia for Real Madrid until 1935.
Bernd Schuster was a Barcelona player between 1980 and 1988, before crossing the 'El Clásico' divide for a two-year stint at Los Azulgranas' arch rivals.
Having progressed through the Barcelona youth ranks to the first team, Luis Milla then made the move to Real Madrid in 1990, staying at the Bernabéu for seven years.
After five years at Barcelona from 1989 to 1994, Danish great Michael Laudrup then had two seasons at Real Madrid..
Croat Robert Prosinecki had three seasons at Real Madrid in the early 1990s, with stints at Real Oviedo and Sevilla then followed by a spell at Barcelona in 1995/96.
Gheorghe Hagi had two years each at Real Madrid and Barcelona in the early to mid-1990s, with two seasons at Brescia sandwiched in between.
Barcelona youth product Albert Celades was part of the Blaugrana first-team set-up from 1995 to 1999, before a single season at Celta Vigo was followed by a move to Real Madrid.
Luis Enrique had five years as a Real Madrid player between 1991 and 1996 before crossing the divide and staying at Barcelona until 2004, later returning to coach Barça B and, since 2014, the first team. He is to step down as Blaugrana boss at the end of
Striker Alfonso Pérez came through the Real Madrid youth system, graduating to the first team before joining Real Betis in 1995. Five years later, he was snapped up by Barcelona, later returning to Betis.
Coached Real Madrid from 1990 to 1992. After spells at Oviedo and Atlético Madrid he took the Barcelona job in 2003.
Striker Dani started out in the Real Madrid youth set-up and, after two spells in the Real Madrid first team either side of a switch to Real Zaragoza, he left the capital club for Real Mallorca in 1998. There he earned a move to Barcelona in 1999, remaini
Julen Lopetegui played for Real Madrid from 1989 to 1991, then spent three years at CD Logronés before signing for Barcelona in 1994.
Nando Muñoz played at Barcelona from 1990 to 1992, then made the move to Real Madrid until 1996.
Miquel Soler had two stints at Barcelona (1988-1991 and 1992-1993) before moving to Real Madrid for a season in 1995.
Ronaldo had one season at Barcelona in 1996/97, after which he left for Inter Milan and spent five years in Italy before joining Real Madrid until 2007.
Luis Figo's case is arguably the most controversial: a hero at Barcelona in five years at the Camp Nou, the Portuguese star was then sensationally signed by incoming Real Madrid president Florentino Pérez in 2005, spending five seasons at the Bernabéu.
After few opportunities at Real Madrid and a number of loan spells, Samuel Eto'o joined Real Mallorca permanently in 2000, his performances with Los Bermellones earning him a 2004 switch to Barcelona.