Barcelona: Barcelona striker Luis Suarez insists his side can't relax when they host Paris Saint-Germain in the second-leg of their Champions League quarter-final tonight despite holding a commanding 3-1 lead in the tie.

Barcelona striker Luis Suarez
Barcelona striker Luis Suarez 

Suarez was the orchestrator of the French champions' downfall in the first-leg at the Parc des Princes with two sensational individual goals to put Barca on the brink of a seventh semi-final in eight seasons.

However, the Uruguayan demanded the same level of intensity and concentration from his side to ensure PSG are given no encouragement at the Camp Nou.

"Nothing is done. We are aware that they have great players and we need to start with the same intensity that we did last week," he said yesterday.

Suarez was also on target after less than a minute in a vital 2-0 win over Valencia to register his 12th goal in as many games, but was replaced by Pedro Rodriguez midway through the second-half.

He was taken off to keep him fresh with Barca embroiled in a bid to win the treble of La Liga, Champions League and Copa del Rey for just the second time in their history.

The French champions will be buoyed by the return of top-scorer Zlatan Ibrahimovic and midfield maestro Marco Verratti.