Port Adelaide have re-signed four key players for the future, with Tom Clurey, Dan Houston, Willem Drew and Ryan Burton all putting pen to paper on contract extensions.

Burton, Houston and Drew were all contracted to the end of 2022, so extensions were expected, while Clurey recommitted early, still having two full years on his contract.

Clurey has signed on until 2025, having built a role in the Power's backline across 110 games.

The 27-year-old is a strong lockdown player and can play on some of the competition's best forwards.

"Tom is an outstanding person and has shown faith in our program by recommitting early," List Manager Jason Cripps said, via the club's announcement.

"He has proven to be a reliable key defender and plays an important role in driving the standards of our defensive group."

Clurey provides important experience in a side full of youth, especially as they push for the flag.

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Houston has signed a mammoth five-year extension that will see him pass free agency and remain at the club until at least the end of 2027.

ADELAIDE, AUSTRALIA - MAY 12: Dan Houston of Port Adelaide handballs under pressure from Mitch McGovern of the Adelaide Crows during the round eight AFL match between the Port Adelaide Power and the Adelaide Crows at Adelaide Oval on May 12, 2018 in Adelaide, Australia. (Photo by Mark Brake/Getty Images)

Drafted as a rookie forward in 2016, Houston has developed into a formidable defensive and midfield option for Ken Hinkley in recent seasons.

"Dan has played 100 games now and is about to enter the prime of his career," Cripps said of the 24-year-old.

"He has performed at a very consistent level for the past four seasons and is a member of our emerging leadersā€™ group.

"Dan is highly valued for his elite decision making and kicking skills."

Burton has signed a three-year extension and will remain at the club until the end of 2025.

The former Hawk was drafted in 2015 at pick 19, before being traded to the Power three years later, despite being in the 22under22 team the year prior.

"Ryan was a player we targeted a few years ago knowing he still had significant upside in his game," Cripps said.

"He has the ability to play various roles within our system and has great attributes such as his speed and foot skills. He has built real consistency into his game and we look forward to seeing the next phase of his career at Alberton."

The injury-riddled Drew has signed a two-year extension after a breakout year that saw him play all 24 games.

ADELAIDE, AUSTRALIA - AUGUST 25: Willem Drew of Port Adelaide during the round 23 AFL match between the Port Adelaide Power and the Fremantle Dockers at Adelaide Oval on August 25, 2019 in Adelaide, Australia. (Photo by Mark Brake/Getty Images)

Drew was rated elite for tackles last season, averaging 6.8 a game to become one of the best defensive-minded midfielders in the competition.

"Willem has had a fair bit of bad luck with injury since we drafted him back in 2016 but he has shown resilience and a strong work ethic to come back and play an important defensive role in our midfield since making his AFL debut in 2019," Cripps said of the young midfielder.

"With further opportunities through our midfield, he will continue to improve as the offensive part of his game evolves."

This comes after Josh Sinn, Dante Visentini and Ollie Lord re-signed with the club on Wednesday, while gun midfielder Zak Butters is rumoured to be nearing a new deal at Alberton.