The two South American rivals meet on Sunday in the final of the tournament.

Dunga said: "Argentina is the favourite team to win the title, but Brazil is going to play with humility. We have to be ready for such difficult match.

"Every game for Brazil is important. We always want to win and now we are going to try to overcome the obstacles."

Argentina'sLionel Messi has been in eye-catching form in the competition, although Dunga was not going overboard in his praise.

He said: "Messi is a great footballer, he scored some goals as Maradona and Pele did in their time, but we can't compare them."

Beside, Dunga didn't give any clue about Gilberto Silva's replacement, with the Arsenal ballwinner suspended for the game

"I have two more days to think about it, to evaluate the situation better," added Dunga.

"But I know that we are going to surprise Argentina. We are working hard to be in our best form."

Argentina, meanwhile, could have Hernan Crespo back from injury for the game.

Team doctor Homero Agostino announced the striker is making a good recovery from his sprain incurred in scoring a penalty against Colombia.

"He has been discharge of his leg treatment," commented Agostino to EFE press agency.

Team-mate Esteban Cambiasso considers Crespo's possible return as crucial for the squad ahead of the final.

"It is very important for us for two reasons: Hernan is great striker and also his recuperation gave us joy," said the Internazionale midfielder.

"I'm Hernan's room mate and I know the way that he has been fighting to be in the final.

"It makes me very happy that the coach could count on him again and I hope that he has a great performance and could enjoy the victory with us."