Barcelona cannot afford to look too far ahead, insisted Xavi after their Champions League victory over Shakhtar Donetsk.
The 5-1 result all but assures Barca of a semifinal date with Real Madrid.
"It was an excellent and extraordinary game," Xavi said. "It is a giant step towards the semi-finals.
"It would be an historical moment for us and challenging to play Real Madrid. Football is full of surprises and challenges.
"But we another match before that one still to play."
