It is the longest contract extension in the club’s history, with Fyfe playing in Fremantle colours as a 31-year-old in the final year of the deal.

“I’m extremely grateful for the opportunity," the 2015 Brownlow medallist said.

"Freo has been my home since the start of my career and I’ve since grown into a leadership role. 

“I really love playing for the club and I’m really grateful and humbled to have the opportunity to be here for the next six years.”

The 2015 Brownlow Medallist said his ultimate goal was to play a role in Fremantle’s first premiership side, adding that Freo's youthful list was “dog-hungry” to improve.

“I think we’ve got a group who are really willing to learn and aren’t interested in waiting around for their careers to follow a natural trajectory,” Fyfe said.

“Clearly, we want to deliver Fremantle their first premiership. It’s a really lofty and ambitious goal. We’re all going to work as hard as we can towards that.”

Fyfe with the 2015 Brownlow Medal

The deal will see Fyfe play at least three more seasons under senior coach Ross Lyon, who is contracted with Fremantle until the end of season 2020.

"I’ve got a great working relationship with Ross, a really strong, professional relationship, and I’m looking forward to seeing what that garnishes over the coming years," Fyfe said.

Fremantle's general manager of list management Brad Lloyd said that the re-signing of Fyfe was crucial as Fremantle builds towards the future.

“We’re absolutely thrilled as a football club to get this long term commitment from Nat,” Lloyd said.

“It was very clear throughout the process that Nat was firmly committed to staying at Fremantle. 

“We feel that we have a really young exciting group coming through, who have come on throughout the 2017 season in particular.

"As captain, Nat is a key leader for those young players and the rest of the playing group, so it’s a really pivotal step for where we’re taking the club."

Fyfe’s manager, Jason Dover, from Stride Management, said: “Nat had a lot of interest from other clubs but we never thought he would leave Fremantle.

"Once Nat had decided to stay the negotiation process with all parties was handled very professionally.

"We believe the contract extension is a great result for both Nat and the club. The future is exciting for him to lead this young team into a new era."