ADELAIDE, AUSTRALIA - JULY 07: Paddy McCartin of the Saints marks in front of Brad Ebert of Port Adelaide during the round 16 AFL match between the Port Adelaide Power and the St Kilda Saints at Adelaide Oval on July 7, 2018 in Adelaide, Australia. (Photo by Mark Brake/Getty Images)

The Swans could utilise former No.1 Pick Paddy McCartin at "both ends" of the ground should the New South Wales club hand the ex-Saint a career lifeline for 2022.

McCartin join Sydney's VFL squad this year after a long recovery from ongoing concussions sustained throughout his career, with the 25-year-old having suffered as many as eight serious head knocks in his tenure at Moorabbin.

After seeing medical specialists and taking a conservative approach to return to the AFL landscape, McCartin is nearing a second chance in the top flight.

The Swans emerged as keen suitors for the Geelong Falcons product earlier this month, with the spearhead likely to be recruited via next year's Pre-Season Supplemental Selection Period.

GOLD COAST, AUSTRALIA - JULY 02: Paddy McCartin of the saints during the round 15 AFL match between the Gold Coast Suns and the St Kilda Saints at Metricon Stadium on July 2, 2016 in Gold Coast, Australia. (Photo by Jason O'Brien/Getty Images)

McCartin's potential addition to John Longmire's squad will bolster the Swans' key-position depths, with the likes of veteran forward Lance Franklin and McCartin's brother, Tom, doing most of the heavy lifting at either ends of the ground.

Speaking to 3AW this week, Longmire revealed McCartin remains in contention to join the Swans ahead of next season, with the club likely to trial the 35-gamer as a defensive and forward asset.

“He’s still in the mix (to be picked up by the Swans),” Longmire said.

“He’ll do some more training with us this year and we’ll look at him in the pre-season period, mainly to give him another opportunity to be able to show his wares.

“We were able to see him play a little bit of footy this year and we think he’s got the flexibility to play at both ends.

MELBOURNE, AUSTRALIA - NOVEMBER 29: Paddy McCartin of the Saints in action during a St Kilda Saints AFL training session at RSEA Park on November 29, 2018 in Melbourne, Australia. (Photo by Michael Willson/AFL Media/Getty Images)

“But we’ll have to wait and see how that goes before that final decision is made.”

McCartin booted 34 goals across his five years with St Kilda, failing to make an appearance in the red, white and black in 2019 due to concussion before being delisted by the club at season's end.