Sergio Leonel "Kun" Agüero del Castillo is an Argentine footballer who plays as a striker for Manchester City in England's Premier League and the Argentine national team. Sergio Agüero joined the youth system of Independiente at the age of nine. In May 2006, Agüero joined Spanish club Atlético Madrid for fee reported to be around €23 million, breaking the club's previous transfer record. He ended his first season in Madrid with 7 goals in all competitions, eased into European football by manager Javier Aguirre, who opted to bring him in and out of the line-up as Atlético finished seventh – enough to qualify for the UEFA Intertoto Cup. On 27 August 2010, Atlético Madrid captured the UEFA Super Cup by beating favorites Internazionale 2–0. The 2010–11 season was arguably Agüero's most successful for Atlético, as he scored 20 league goals for the first time in his career. On 28 July 2011, Manchester City confirmed that Agüero had signed a five-year contract with the club for $60 million. Agüero made his debut for City on 15 August 2011 in a 4–0 Premier League victory over Swansea City. On 1 November, Agüero was shortlisted for the prestigious FIFA Ballon d'Or. On 4 May, Agüero was named Manchester City Player of The Year. His first goal in the 6-1 away win against Norwich also won him the club's "Goal of the Season" award. At international level, Agüero represented the Argentina under-20 team at the FIFA U-20 World Cup in 2005 and in 2007, winning both tournaments. Agüero played at the 2008 Beijing Olympics, he scored two goals in the 3–0 semi-final win against Brazil as Argentina went on to win the gold medal. Agüero was selected to represent Argentina in the 2010 FIFA World Cup and the 2011 Copa América.