5. Ibrahim Afellay
Another Dutch player who lost his bearings after a sensational start, Afellay was a star at PSV Eindhoven for many years. The winger made his offical debut for PSV when he was just 17, and progressively developed with the club, becoming one of their key players as well as the captain of the side in the coming years.
After being linked with numerous big name clubs for a year, Afellay finally chose to move to Barcelona in 2011. However, a mixture of injuries and bad form has meant that the 27-year old has just made a total of 20 league appearances for the club in almost 3 years, even getting loaned out to Schalke last season.
He currently is back at Barcelona, but is out with injury and unlikely to win back a first-team place any time soon.