Van Nistelrooy: Barcelona form not worrying Real Madrid
"They (Barcelona) play well, but we are still leaders, there isn't anything to be worried about," said the Dutch ace.
"For us it is important to win and to play well. It is difficult in football to combine these two things. In this season we have made good games, against difficult rivals. We are going to continue like this and try to win with this group, which is very young.
"We have a long time to improve."