Asked in an interview in Stern magazine to be published on Thursday if he would retire from the national side after the 2006 World Cup in Germany, Kahn said: "I feel physically far too fit."

"Dino Zoff was a World Cup winner at 40," Kahn added, referring to the former Italy keeper who captained his side to victory in 1982. "At 40 -- I'm 34 now, so that would be the 2010 World Cup."

Following a poor run of form in recent weeks, including a much-criticised blunder against Real Madrid in a Champions League tie when he let the ball roll under him for a goal, Kahn dismissed talk that he needed a break.

"Why should I take a time out?" he said. "Do I look tired or something?"

Kahn will not feature in Germany's friendly against Belgium on Wednesday after coach Rudi Voeller opted to give Arsenal keeper Jens Lehmann a chance in goal.

Voeller said Kahn remained his number one choice but was giving him a break for the match in Cologne.

Lehmann caused uproar last month when he said was better than Kahn in a magazine interview last month. He later apologised for the comments.