The Portuguese league leaders came from behind to sweep aside the Premier League side.
Chelsea beat Rubin Kazan at home by the same score, whilst Fenerbahce won 2-0 against Lazio. Tottenham drew 2-2 with Basle.
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Summer 2016 is set to be a very exciting time for football fans, as this is when the long awaited Euro 2016 tournament kicks off.
Since Guus Hiddink arrived at the helm, Chelsea have improved considerably after a tricky start to the campaign.