Chelsea responded to their opening round defeat against Basle by winning at Steaua Bucharest and on Tuesday night face the first game of a potentially decisive double-header with group leaders Schalke, who have maximum points from their first two games.
The Chelsea captain said: "We had a minor blip at home (against Basle). Win this game and we're in a much stronger position.
"We're not coming here under false pretences that we're going to come here, pick up three points easily. We understand it's going to be a tough night."
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