Real Madrid legend Roberto Carlos: Xavi most important player at Barcelona

Real Madrid legend Roberto Carlos feels Xavi is the most important player at Barcelona.

Roberto Carlos feels if Xavi can be silenced, so can Barca.

The Anzhi player-coach explained: "Barcelona is highly dependent on Xavi. To play against Barcelona you must first try to silent this guy, who is the reference."

"Xavi is a genius. He has a bit more than others, but people do not value him as they should."