Manchester City boss Roberto Mancini felt his team had come through a tough test despite beating Porto comfortably in the Europa League.

City cruised into the last 16 as they ran out 4-0 winners at the Etihad Stadium to complete a 6-1 aggregate success over the holders and Portuguese champions. Yet after taking the lead through Sergio Aguero after just 18 seconds, City had to wait until the 76th minute to double their advantage after spurning a number of chances.

Mancini said: "It is not easy to beat Porto, they are one of the top teams in Europe and I am happy that we are going to the next stage."

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