Midfielders Gilberto Silva and Kleberson, who won the World Cup with Brazil in 2002, have defended coach Dunga's plans to keep the squad preparing for the 2010 finals isolated from fans and media.
Arsenal suffered another injury blow ahead of Sunday's Premier League game against Manchester United when midfielder Mathieu Flamini was ruled out for up to three weeks with an ankle injury on Thursday. The Frenchman suffered the injury in the first half of Tuesday's Champions League defeat by Liverpool when he was replaced by Gilberto Silva before halftime and the Brazilian is set to start in his place at Old Trafford.
Arsenal brushed aside Reading 2-0 at the Emirates on Saturday for only their second win in nine EPL games.
Dunga's appointment as Brazil coach after last year's World Cup was greeted with scepticism by many because he had no previous experience.
Nicolas Anelka scored twice against his old club to help Bolton Wanderers beat Arsenal 3-1 to climb to third in the Premier League on Saturday.
Arsenal thrashed Middlesbrough 7-0, while Manchester United lost 3-1 at Manchester City in the Premier League.
Chelsea stay a point clear of Arsene Wenger's unbeaten team with 36 points.
Ronaldo has been recalled by Brazil for this month's match against France which coach Carlos Alberto Parreira has described as the "game of the year".
An 87th-minute equaliser by Ronaldo helped Brazil salvage a 3-3 draw at home to Uruguay.
Portugal football team captain Cristiano Ronaldo has been voted as the No 1 footballer in the world overtaking Argentina skipper Lionel Messi for the top spot.