Araujo signed a 3-year contract with AEK Athens on August 18, 2009. AEK signed Araujo as a free agent. Araujo was the fifth Argentine AEK Athens player for the 2009–10 season, the others being Sebastián Saja, Ignacio Scocco, Nicolás Bianchi Arce and Ismael Blanco. Although the good performances in Greece and Europe, Araujo had to return to Argentina due to a sudden family issues on July 2010. Ηe left AEK Athens after the conflicts between him and the team about were close to lead in court. He was loaned the remaining year of his contract in Lanus having previously denied loan offer from Independiente Rivadavia although the pressure of AEK Athens.
On December 23, 2010, Araujo returned to Argentina, joining Lanús.