Valbuena´s match-winning goal when the teams met at Anfield means Liverpool must win in midweek at the Stade Velodrome to pip the Frenchmen to a place in the knockout stages.
But Valbuena, speaking after Saturday´s 2-0 win over Monaco, believes Rafael Benitez´s side will be a sterner proposition, saying: "On Tuesday we have a very important opportunity for the club. We know how talented Liverpool are - we caught them cold. They are not going to come in the state they were for the first match when they underestimated us a little."
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