Mathieu Debuchy (French pronunciation: ; born 28 July 1985) is a French professional footballer who plays for Arsenal and the France national team. He is often deployed in the right back position, but began his career playing as a midfielder usually acting as a deep-lying playmaker. He started his career at Lille, where he won a Ligue 1 and Coupe de France double in 2010–11. He joined Newcastle United in January 2013, and was signed by Arsenal in July 2014.
Debuchy made his debut for the France national team in 2011 and has since earned over 25 caps, playing at Euro 2012 and the 2014 World Cup.
Debuchy began his career playing for his hometown club Union Sportive Frétin before joining Lille at the age of eight. After spending a decade in Lille's youth system, he was promoted to the senior team following the winter break of the 2003–04 season. Debuchy was given the number 33 shirt and simultaneously made his professional debut and first start on 31 January 2004 in a league match against Metz. He played the entire match as Lille recorded a 1–0 win. Debuchy made five more appearances that season, which included two starts and three substitute appearances.