Dortmund: German football club Borussia Dortmund has announced the signing of Portugal winger Raphael Guerreiro for 12 million euros ($13.4 million). "Raphael Guerreiro is a skillful player who feels at home in a wide range of positions," Dortmund sporting director Michael Zorc said on Thursday. Guerreiro, coming from French side Lorient, underwent a medical examination at the Portugal training camp for Euro 2016 in France, reports Efe. The 22-year-old has signed with Dortmund until 2020. He is the sixth signing for Dortmund ahead of next season following Emre Mor, Ousmane Dembele, Mikel Merino, Marc Bartra and Sebastian Rode, with Mor, Merino and Dembele still under 20.