Antonio Conte's side have been under pressure of late while Ernesto Valverde's Barca have lost just once since the Champions League group stages concluded in early December.
"We have to try to have the flawless game and to make the best decisions also for this type of team, because this is a different opponent".
With that in mind, I expect Chelsea to give it their all but I don't doubt that they'll be nervous, something that won't happen with Barcelona as they come into this fixture in such a strong position - comfortably leading La Liga and already in the Copa del Rey final.
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Messi has yet to score against Chelsea in eight previous meetings and Conte knows the Argentina worldwide can turn a game with a moment of magic.
Asked if he was anxious about more of his players being tempted to accept mega-bucks offers from the Far East, Valverde said: "At the moment it has only happened with Mascherano and I am not going to make myself go insane thinking about these things before they have happened".
"We hope there's a lot of goals but I don't think so, so a draw."Chelsea are unbeaten in their last seven Champions League games against Barcelona, though have won just two of those meetings. We have days now to work on the game and I'm sure the manager will find the best solution". They last played six years ago.
Rudiger also mentioned about the quality of the opposition, but will do what he does best when it comes to closing down their attacks, he added, "My respect for them is good, but once the referee blows the whistle I will always try to win my games".
"I'm very well there".More news: How effective is this year's flu shot?
Chelsea have the upper hand against Barca with four victories in 12 matches compared to the Spaniards' three wins. We have a plan in our heads.
"Everyone is prepared to play", he said.
Lionel Messi, regarded as one of the greatest players in the history of the game, has an abysmal record against Chelsea.
The reigning Premier League champions have been below-par this season, losing by large margins to the likes of Watford and Bournemouth. "A team like Chelsea in every game must have the right pressure", said the Italian.
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"We play in different leagues".
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