The Wallabies open their account on Saturday [August 20] against New Zealand in Sydney and the tournament finishes against Argentina at Twickenham Stadium on October 8.

“We had a little reaction after the England Test Series and it was clear we needed to fix a few things – what works one year might not work the next,” said Mumm. “We’ve worked hard in camp over the last month to make changes. Having the first two games against the All Blacks is a great opportunity because we know what we can do – we want to show what we’re capable of and then get ready to go again.”

The former Exeter Chiefs lock relaunched his international career in 2015 after two successful seasons in the Aviva Premiership. “I was certainly ready for something different and it provided a spark.” he said of his spell at Sandy Park.

He is on the bench for the Rugby Championship opener against the All Blacks and should be back in England in October, when Australia meet Argentina in a replay of last year’s World Cup semi final.

Mumm scored his second Test try in Mendoza in 2015 and rates the Pumas highly for the way they have evolved from a forward-based outfit into a team that will attack from anywhere on the field.

“Their strengths are the passion and the flair they have – you see that in why way they play,” he said. 

“They’re not constrained by what they ‘should’ do on the field. If it’s there to play through the hands, they’re going to do it. For so long they’ve been classified by their forward play but now they have the backs too and they’re a serious threat to anyone.

“In the week [of the semi final] we knew they were performing very well and that we had to start the game strongly. I remember a hit from David Pocock early on and that set the tone for us in terms of physicality. You’ve got to muscle-up against them otherwise they can open up and the tries can flow.”

Tickets to Argentina v Australia at Twickenham Stadium are available from £45 for adults, £25 for children (U16) and a family package (2 adults & 2 children) for £115. (Booking fees apply) Click here for details