Barcelona's Xavi says the team will not underestimate the power of Chelsea when the two clubs meet in the Champions League semi-final.

The Spanish club are intent on winning European silverware this season and their form in the Champions League has been second-to-none so far but they are not getting carried away, knowing Chelsea are a dangerous opponent.

"We are in a great position right now, everything will be decided in a month and a half; anyway claiming all three titles will be difficult," Xavi told As.

"We are mentally and physically good and we respect Chelsea, who have always been tough to beat for us in the past.

"Not conceding goals in the first leg will be hugely important."