Emma Hayes insists Chelsea have not overanalysed "world-class" Barcelona ahead of their Champions League clash on Saturday.Chelsea have travelled to Catalonia for the first leg of their semi-final 12 months on from the two clubs meeting at the same stage of the competition.Barcelona prevailed 2-1 on aggregate on that occasion before overcoming Wolfsburg in Eindhoven to lift the trophy for the second time in three years.

Emma Hayes insists Chelsea have not overanalysed "world-class" Barcelona ahead of their Champions League clash on Saturday.Chelsea have travelled to Catalonia for the first leg of their semi-final 12 months on from the two clubs meeting at the same stage of the competition.Barcelona prevailed 2-1 on aggregate on that occasion before overcoming Wolfsburg in Eindhoven to lift the trophy for the second time in three years.