Career
Born in Plasencia, Cáceres, Guillén was signed by Real Madrid from another club in the capital, amateurs Las Rozas CF, first representing Real Madrid C. In the 2006-2007 season he made his debuts for the B-team in the second division, playing in 17 games as the side was relegated. The following year, he contributed even less (only five matches). Released by Real Madrid in 2008 Guillén resumed his career in the third level, first with Benidorm CF then UE Sant Andreu, Civil Engineering L"Hospitalet, Civil Defense Atlético Baleares, Burgos CF and CF Fuenlabrada.