Manchester City produced a strong finish to power into the last 16 of the Europa League with a 4-0 victory over 10-man holders Porto.
Sergio Aguero set up victory by extending City's 2-1 first-leg lead after just 18 seconds at the Etihad Stadium before hitting the crossbar.
Edin Dzeko came off the bench to add a second late on before the sending off of Rolando preceded further goals from David Silva and David Pizarro, rounding off a 6-1 aggregate triumph.
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