Get the City transfer window latest, team news, match updates and analysis delivered straight to your inbox 59 minutes were on the clock when Roberto Mancini made a substitution that changed the course of history.
It was Manchester City's first game of the 2011/12 Premier League season, and they were 1-0 up against newly-promoted Swansea City at the Etihad Stadium.
Edin Dzeko, himself a relatively new striker at the club, had prodded City ahead, but it was another attacker whose legend would begin that night.
Sergio Aguero replaced Nigel de Jong to rapturous applause, the City fans excited to see the then club-record signing for the first time.
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