Bayern Munich midfielder Javi Martinez is worried about Barcelona's star-studded line-up ahead of the Champions League semi-final.
Jupp Heynckes' men are widely regarded as the form side in the world, having wrapped up the Bundesliga title with a record six rounds to spare and stormed into the last four of the Champions League with a resounding 4-0 aggregate win over Serie A champions Juventus.
Martinez, speaking ahead of Tuesday's first-leg clash with Barca at Allianz Arena, is extremely wary of the threat posed by Tito Vilanova's men.
"Unfortunately, everything about them worries me," the Spain international told AS. "They're a very balanced outfit and they have the best player in the world.
"And even if (Lionel) Messi has a bad day, he has plenty of team-mates who can do a very good job, such as Pedro, Alexis (Sanchez), (David) Villa, Xavi, (Andres) Iniesta, etc."
Martinez believes there is virtually nothing between the two genuine European superpowers.
"I think it's the perfect moment for us to take on Barca," the former Athletic Bilbao man said. "The problem is that they're also in good form."
Martinez is looking forward to the challenge, particularly from a personal perspective, as he is keen to take on the player he believes to be the best in his position.
"Sergio Busquets is the key cog in the Barca machine," he said. "There are other players who grab the headlines, but if this Barca side has won so many titles it's thanks to him.
"He always holds his position. He brings other players to life, such as Xavi or Iniesta. They can join in the attack knowing that he's got them covered."