Manchester United fullback Patrice Evra feels Barcelona are at an advantage because their stars know eachother so well.
Xavi, Andres Iniesta and Lionel Messi all came through at Barca as juniors.
Evra told manutd.com: "We know each other, but they know each other so well and so perfectly.
"Every time Messi gets the ball he knows Xavi is going to be there, Pedro is going to be there, or Iniesta. It is amazing. It looks like they have a plan.
"They make a route to score a goal. You have to give a lot of credit to Barcelona and their manager."