Roger Guerreiro (born on 25 May 1982 in São Paulo, Brazil), commonly known as Roger, is a naturalized Polish footballer currently playing for A.E.K. Athens as an attacking midfielder.On the 8/27/09, Roger Guerreiro signed a 4 year contract with AEK Athens F.C.. Roger Guerreiro is the third Brazilian in the team, the others are Leonardo and Éder.Guerreiro stated, I am very glad to sign with a huge team like AEK, my first goal is to win the title with AEK, since the team has not won the title in the last decade. Guerreiro made his debut for AEK versus Iraklis on September 13, 2009.Roger Guerreiro was a regular for AEK until he fell out of favor with coach Dusan Bajevic and was not included in any squads. In the transfer period, Guerreiro was for sale and was offered to many European clubs.