Roberto Mancini’s side entered the last-32 second-leg tie buoyed by a 2-1 away win at Estadio do Dragao in the reverse fixture, after the mercurial Argentine striker snatched a late winner in Portugal.
And Aguero grabbed the headlines again at the Etihad Stadium by scoring after 19 seconds when latching onto a sublime Yaya Toure pass before coolly slotting home.
That set the tone on a great night as Edin Dzeko pulled us further ahead with 15 minutes remaining when sliding home City’s record goalscorer’s neat, defence-splitting, pass.
Porto’s task was then made harder soon after when centre-back Rolando was dismissed for a second yellow card.
City then made our man advantage count when David Silva all-but sealed our progression into the next round by calmly tapping into an empty net seven minutes after the Portuguese defender was sent off.
We weren’t finished there though, and the victory would be one to remember for Roma loanee David Pizarro - who bagged his only goal for the Club in the closing stages as we hit four.
Watch the best bits of the Europa League success via the video above!
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