sentences:  The link contained a buy-back clause that allowed Espanyol to re-sign the player at a later date, but it was later revealed that such clause did not exist; however, the "Pericos" retained the first option should the Welsh club wish to sell in future.Serrán was released by Swansea at the end of the 2010–11 season, which ended in Premier League promotion.He joined AEK Larnaca FC in Cyprus shortly after, having already reached an agreement with the team in May.