Sydney star Dane Rampe is set to likely remain a Swan for life after extending his deal with the club by a further three years.

Already signed with the Swans for next season, Rampe is now tied to the club until at least the end of 2022.

The 2016 All Australian defender is yet another of Sydney's success stories after being selected as a rookie ahead of season 2013 following years of being overlooked.

He's played 23-plus games in five of his six seasons in the league, with a broken arm suffered in 2017 the only major injury of his career.

The Sydney local told AFL.com.au on Friday he had little interest in seeing what other clubs had to offer him next season.

"It came together pretty easily, the club approached me a little bit earlier than I would have thought, but I'm obviously rapt," he said.

"I think the club knew that as well, so it probably helped from their end."

Rampe has been back at pre-season training for the past fortnight with the rest of the Swans' more experienced players, part of a new-look squad that welcomed 10 new recruits over the off-season.

The Swans welcombed on board Dan Menzel, Jackson Thurlow and Ryan Clarke via October's trade period, before nabbing seven draftees in November.

Rampe said seeing so many new faces on the track was exciting.

"We've turned over a quarter of our list and it's probably the biggest turnover since my first year at the club in 2013.

"The demographic of the list is changing. I think 60 per cent of our guys are 24 or under, so we're really excited to get into this new stage."

Sydney's defence has been one of coach John Longmire's greatest strengths, with Rampe and fellow backmen such as 2018 Club Champion Jake Lloyd, veterans Jarrad McVeigh, Heath Grundy and Nick Smith, as well as youngster Callum Mills forming a formidable and settled group.

There's a good chance Mills will join the midfield rotation as his career develops in 2019, but Rampe isn't sure the former AFL Rising Star will be lost to the backline for good.

"He's obviously a really valued member of the backline, his strengths are obviously his intercept marking in that third-tall role," he said.

"He's going to be pushing his case for a move to the midfield, but I dare say he'll split his time 50/50 between the two."