Barcelona coach Ronald Koeman expects to be pushed to the limit by Atletico Madrid.
Koeman is a big fan of Atletico and their coach Diego Simeone.
"We know it's a difficult game against a strong team," Koeman explained.
"We have to highlight the work of their coach [Diego Simeone]. They work well and they're a very competitive team.
"We know it will be difficult, but we believe in ourselves.
"We have important players missing, but hopefully it will be a great game.
"It's an important game and we need a good result. A season is very long and a lot can happen, but they'll fight to win the title.
"They're a competitive team and we'll have to play well and to fight against them."
