4. Marc Overmars
He is one of the few players that actually got Arsenal a huge price when he was sold on. Overmars is another player who ended up joining Barcelona and the Dutchman was a revelation in La Liga. He was part of a team that consisted many Dutch players and his four years at Barcelona from 2000-2004 he was one of the best players at the club, even though he didn’t win much with the Catalan giants.