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MANCHESTER, ENGLAND - FEBRUARY 24: Manchester City;s Argentinian striker Sergio Aguero celebrates after he scores during the UEFA Champions League Round of 16 football match between Manchester City and Barcelona at The Etihad Stadium on February 24, 2015 in Manchester, England. (Photo by Ian MacNicol/Getty Images)

MANCHESTER, ENGLAND - FEBRUARY 24: Manchester City;s Argentinian striker Sergio Aguero celebrates after he scores during the UEFA Champions League Round of 16  football match between Manchester City and Barcelona at The Etihad Stadium on February 24, 2015 in Manchester, England. (Photo by Ian MacNicol/Getty Images)