Newly re-signed Wallabies coach Robbie Deans says he invested too much time and effort into the Australian job to consider holding out for a possible switch to his native All Blacks after the World Cup.

Deans was on Tuesday re-signed by the Australian Rugby Union for a further two years in a deal that will see him remain at the helm until late 2013.

The move was met with mixed reactions, with Wallabies great Mark Ella among those questioning why Deans was re-signed two months out from his biggest test at the World Cup in New Zealand.

Seen as a significant gamble by the ARU, others suggested the move was designed to lock in the esteemed coach's services and prevent him returning to New Zealand or taking on a job in Europe after the tournament.

But the 51-year-old on Wednesday reaffirmed his commitment to Australia, insisting he had unfinished business with his young squad.

"Oh no, when you put as much time and energy into a group, the answer to that question is no," Deans, a former All Blacks player and assistant, said when asked if he had considered holding out to see if the New Zealand job became available after the World Cup.

"I've invested a lot of time and energy with this young team and, just as they've committed and are evidently excited about the future, so am I."

Deans touched down in Sydney on Wednesday afternoon following Australia's victorious visit to South Africa and stumbled momentarily when asked if he was deserving of the contract extension before the World Cup.

"It's not really the question," he said.

"The board takes a bigger view and you probably need to talk to them in terms of the motivations.

"... You get results along the way but you've also got to have an end in mind and I guess they are obviously sufficiently encouraged we are trending in a certain direction and hence they've provided the endorsement."

Deans' coaching record since he took the Wallabies' reins in 2008 stands at 26 wins, 20 defeats and one draw - a success rate of only 56 per cent.

But his case for a new contract was helped by the Wallabies' win over the Springboks on Sunday.

Many share the ARU's view that the Wallabies are heading in the right direction under Deans and the coach said there was still infinite improvement within the side.

"It (the work) never ceases," said Deans, who will name his 30-man World Cup squad on Thursday.

"You just keep going and the key is to keep learning, keep evolving."

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