Ardie Savea

The Canes will be without Savea for most of 2020 Super Rugby season with the flanker needing knee surgery.

Savea said on social media he needs the operation after hurting himself during the All Blacks World Cup semi-final loss to England.

"Pretty gutted when I found out even though I thought I'd be sweet if something like this happened," Savea wrote on Instagram.

With his recovery expected to last between five to six months, Savea may only return if the Hurricanes make the Super Rugby playoffs.

The move comes after Savea discovered that the vision had deteriorated in his left eye and he realised he had to protect his eyesight.

"A couple of years ago I realised I had bad vision in my left eye. Everything's kind of blurry," Savea said. 

"I told All Blacks doctor Tony Page that it was getting worse and now we're doing something about it. Doc notified me that World Rugby had some goggles that were approved and everyone has been really supportive. In terms of vision and seeing, it's pretty sweet, and it's now just a matter of getting used to them."

Savea makes his first start at blindside flanker, with captain Kieran Read at number eight and Sam Cane at openside.

Coach Steve Hansen seems to have had a change of heart about playing loose forward Savea at number six.

Hansen has said previously he doesn't believe Savea has the bulk to play at blindside but has opted to play him there rather than moving skipper Kieran Read to the side of the scrum and bringing Savea in at number eight.

Beauden Barrett, Ardie Savea, TJ Perenara, Ngani Laumape and Vaea Fifita will all take their place in the run-on team at CET Arena in Palmerston North on Friday night.

Barrett and Savea were on All Blacks leave/rest during last weekend's 38-22 loss to the Crusaders, Perenara and Laumape came off the bench, while Fifita played 50 minutes for the development team on his way back to fitness after a hamstring injury.

The Hurricanes have added 182 All Blacks caps to their starting XV to take on the Brumbies.

The Hurricanes and Wellington star posted the news to social media this morning and his decision comes after French media reports he was set to join the Pau club after next year's World Cup.

"Truely (sic) blessed to have re-signed with NZ for 2020-2021," Savea posted on Instagram.

"To be honest was a very tough decision but being at home with family and close friends and the opportunity to play for @allblacks @hurricanesrugby @wgtn_rugby I couldn't leave.

"Thank you to the fans for the on going support. Can't wait to get stuck in to 2019 with my canes brothers".

Twenty-four-year-old Savea and 21-year-old Barrett have recommitted through to the end of the 2019 season.

Twenty-five test Savea made his Super Rugby debut for the Hurricanes in 2013 and All Blacks Test debut in 2016, while Barrett made his Super and Test debut in 2017. He has played five Tests.

"Wellington is my home town and it's great I can stay here and contribute as much as I can for the Hurricanes," said Savea.

"Also, we all know how important next year is for the All Blacks with the Rugby World Cup in Japan and I really want to be a part of that campaign."

Hearts were in mouths as the Hurricanes loose forward lay prone on Suncorp Stadium, having taken the ball into contact during Saturday's 34-15 win over the Reds. He was eventually helped from the field and diagnosed with a calf injury.

That's better than a knee or ankle, assuming the strain is as minor as the Hurricanes have suggested.

"He's pulled up pretty well considering what he looked like when he was on the ground there. He's got a niggly calf and he'd be pretty doubtful for this week," Hurricanes backs coach Jason Holland said on Monday afternoon.

The loose forward was helped from the field late in the team's 34-15 win over the Reds in Brisbane, having taken the ball into contact and not got up.

Savea had produced a typically robust and explosive performance, from No.8, in what was a rather atypical match.

Referee Angus Gardner awarded three tries to the Hurricanes - Beauden Barrett in the 24th minute, then Mark Abbott (53rd) and finally TJ Perenara (56th) - only to think better of it after the host broadcaster went through its repertoire of replays.

After five impressive bench appearances, dynamic flanker Ardie Savea is in the run-on side to face South Africa in Christchurch on Saturday, replacing the injured Sam Cane.

It is the only starting change from the side who roared away late to a 57-22 win over Argentina in Hamilton last week, extending the unbeaten All Blacks' lead in the Rugby Championship.

Openside flanker Cane suffered a hamstring injury which will sideline him for at least a month, opening the door for 22-year-old Savea to show his prowess from the opening whistle.

RNZ reports the 22 year old, who made his All Blacks Test debut against Wales last month, said it had been an easy decision to re-commit until the end of 2018.

"I'm loving my rugby right now at all levels of the game and I'm excited about the future with both the Hurricanes and, if I'm good enough to be selected again, the All Blacks.