Real Madrid and Barcelona have played each other four times already this season.
Madrid won the first El Clasico meeting 3-1 in a La Liga clash at the Santiago Bernabéu, before losing the next three to Barca in the Supercopa, La Liga and Copa del Rey first leg.
Ahead of Wednesday night’s Copa del Rey semi-final second leg tie, Ancelotti has vowed to get his pound of revenge.
“They have beaten us in the last three matches and I believe that tomorrow it’s time for us to win,” Carlo Ancelotti said in his press briefing ahead of the Barcelona match.
“Are Barca the favourites? We have 90 minutes to turn the tie around and I think that it will be a very equal game. I don’t know who are the favourites, it will be decided by the details.
“El Clasico is always the most important game for everyone. We have a great rival in front of us. A win would allow us to reach the final in an important competition and we will do everything to achieve it.”