Atlético Madrid midfielder Koke has revealed his side's number one priority when they take to the field of the Camp Nou on Sunday night: stop Leo Messi.
The Argentine has scored twice in each of the last seven games he has started and Koke believes the whole team must focus on stopping him.
"He is the best in the world and like Gabi said we'll all have to work to stop him," he said.
"We will stick to our style and philosophy against Barcelona. We were wounded by losing the derby, but it's in the past and our team spirit is still intact."
Barcelona."They are the best team in the world and Xavi and Iniesta are the two best players in their position. I'm delighted they both came through the academy and have had success. Barça are the league leaders and so they are the favourites for the game, if we win we will keep thinking on a game-by-game basis."
Tactics: "To cause them damage we'll have to stretch the play out onto the wings, because they are at their best when playing through the middle, but we'll have to play a perfect game to win."
His own performances: "I'm very happy with how I'm playing and I'm taking advantage of every minute I get."