Figo joined Madrid from Barcelona in the summer of 2000.
Ronalo left for Inter from Barca and then returned to Spain in 2002 by joining Real Madrid
After five glorious years with Barca, in 1994 he moved straight to Madrid.
Despite winning three trophies in five years at Madrid, he joined for Barca on a free transfer in 1996.
Eto'o joined Madrid as a youngster but never made it to the first team. He left for Mallorca and moved to Barca in 2004.