Chelsea defender Cesar Azpilicueta concedes they cannot be too open against Champions League opponents Barcelona.

It's the first time the two sides have met since Chelsea knocked the La Liga giants out at the semi-final stage in 2012.

And Azpilicueta admits keeping Lionel Messi quiet will be key to their success.

“By making the game tight and being all together," he told AS.

“There's nobody else like him. He is a different player from the rest."

But while Azpilicueta is aware of Messi's ability, he insists that the Argentine is not the only player capable of changing the game.

When asked if Messi could be the difference he said: “And Eden Hazard too.

“Look, line by line we will measure two of the best players in the world."