The men who Irish U-21s will face
Against Romania, Ireland's starting line-up contained three players from Wolves, two from Blackburn and one each from Sunderland, Aberdeen, Watford, Aston Villa, Derby and Bray.
Here, we look at the Spaniards and the clubs their starlets will represent tomorrow.
Espanyol goalkeeper, being linked with clubs in Italy.
Real Madrid full-back, a regular in their reserve team.
Barcelona defender who made his debut in Spanish Super Cup against Sevilla last August.
Arsenal defender played the full game in FA Cup tie against Leyton Orient.
Athletico Bilbao defender with Europa League experience.
Atletico Madrid midfielder, represented Spain U-17s at the 2009 FIFA World Cup in Nigeria.
Real Madrid striker, top scorer at the U-19 finals and will be a handful for Ireland skipper John Egan.
Barcelona midfielder who made the bench for La Liga game against Real Sociedad.
Getafe midfielder signed from Real for around €3m, with Madrid holding a buy-back clause.
Malaga striker netted a brace against Real Zaragoza last season.