The two La Liga giants meet in the Clasico this Sunday in a match that could go a long way to deciding La Liga.
Barcelona trail Real by three points and have played a game more as the season reaches the home straight.
But former Barca midfielder Xavi thinks Luis Enrique’s side can win at the Bernabeu.
Xavi has backed Barcelona to beat Real Madrid in El Clasico
Lionel Messi is desperate to close the gap at the top of La Liga
“As a Barca fan, I've got to back them to win it,” he told the La Liga website.
“As for the scoreline, let's say 2-1. Having said that, although I'm hoping and pulling for Barcelona to come out on top, I think it's very tightly poised.”
Barcelona transfer odds: Which Premier League stars could head to La Liga? Wed, March 29, 2017
Which Premier League players are most likely to join Barcelona in the summer, according to odds provided by 888sport?
Play slideshow Getty Images 1 of 11
Which Premier League players are most likely to join Barcelona this summer?
And Xavi thinks it could be a spectacular match.
“This Clasico is going to be absolutely pivotal in the title race,” he added.
Get Quotes on Home Insurance
“It's a six-pointer. Both Real Madrid and Barcelona's chances of being crowned champions hinge on the outcome, and a Madrid v Barca encounter in which the title is on the line promises to be a spectacular, highly charged game.”