FC Barcelona head coach Xavi Hernandez believes midfielder Frenkie de Jong is “one of the best” in the world.De Jong, 25, starred in Barcelona’s 1-0 La Liga victory over Athletic Bilbao on Sunday, continuing his strong form this season.Barcelona leave the hostile Basque country victorious”He’s been at an extraordinary level for months now,” Xavi said. “He goes through the middle to receive, generates superiority.”He loses few balls, breaks lines, he’s one of the best midfielders in the world.”##NAJAVA_MECA_7098908##De Jong has appeared 33 times this season for Barcelona in all competitions, scoring twice and registering one assist.Barcelona play Real next Sunday at Camp Nou in a bid to extend their lead to 12 points at the top of La Liga and, basically, put an end to a title race.##NAJAVA_MECA_7099697##