Career
Born in France, he began his career at Caen, signing in 2013 with Lorient where he made his Ligue 1 debut. Guerreiro represented Portugal at under-21 and senior level, first appearing for the latter in 2014. Born in Le Blanc-Mesnil, Seine-Saint-Denis to a Portuguese father and a French mother, Guerreiro played youth football for three clubs, finishing his formation at Master of Science Caen after signing in 2008 at the age of 14.
After starting as a senior with the reserve team he made his professional debut in the 2012-2013 season, appearing in all the games and failing to start only once in an eventual fourth-place finish in Ligue 2.
He was also elected to the Team of the Year. On 27 June 2013 Guerreiro moved to Ligue 1, after signing a four-year contract with Football Club Lorient.
His maiden appearance in the competition took place on 10 August, as he featured the full 90 minutes in a 0–1 away loss against Lille OSC. On 1 November 2014 Guerreiro scored his first goal for Lorient, opening the scoring at title-holders Paris Saint-Germain F.C. but in an eventual 1–2 defeat. He finished the campaign with seven goals to help his team stave off relegation, including the equaliser as they came from behind to defeat his former employers 2–1 at the Stade du Moustoir.
Guerreiro opened the scoring in a Derby Breton on 24 October 2015, assisted by Majeed Waris in a 1–1 home draw against Stade Rennais Football Club.
Though born in France, Guerreiro accepted the call to represent the Portuguese under-21s after being spotted by Rui Jorge"s coaching staff, making his debut on 21 March 2013 in a 0–1 home defeat against Sweden.
On 7 November 2014, even though he hardly spoke the language, he was called up by Fernando Santos to the full side for a Union of European Football Associations Euro 2016 qualifier against Armenia and a friendly with Argentina. Guerreiro returned to the under-21s and helped them finish runners-up at the 2015 Union of European Football Associations European Championship in the Czechoslovakian Republic. He was one of five Portuguese in the Team of the Tournament.
International goals
Scores and results list Portugal"s goal tally first.
