Subiaco are poised to benefit from an exodus of senior players at Swan Districts as the club plans for life without captain Aidan Parker.
Parker, a three-times premiership player, announced his retirement this week, ending a stellar 231-game WAFL career.
The 30-year-old was a key cog in defence in one of the most successful eras in the club's history.
Subiaco football manager Luke Sanders said Parker would be a huge loss.
"We were trying to convince him to play on, but he's made the decision not to," Sanders said.
"He was an exceptional player, a captain of the footy club. His record speaks for itself."
A replacement skipper is yet to be appointed.
The Lions hope the recruitment of Swans duo Shaun Hildebrandt and Wade Twomey will help offset Parker's retirement.
Hildebrandt, 29, is returning to the club where he won premierships in 2007 and 2008 and made 118 league appearances.
The wingman wants to achieve life membership at the Lions by reaching the 150-game mark.
Twomey, 28, arrives after being judged best afield in WA's victory over Victoria last year.
The former Carlton player was dropped to Swans' reserves a week after his glittering interstate performance.
The signings are likely to be finalised shortly.
West Perth big man Frank Stockley, who won last year's Prendergast Medal as the reserves' best-and-fairest player, has also joined Subiaco.
Hildebrandt and Twomey's departures have been compounded by Kyle Hams and Brett Robinson also leaving Swans to play in the South West Football League.
Meanwhile, former Essendon forward Kyle Reimers has left Perth after just one season.
Reimers, who kicked 26 goals for the Demons last year, has returned to Melbourne.
Retired Claremont ruckman Andrew Ruck and former Perth midfielder Kade Lang have taken up coaching roles at the Demons.