Simpson, who remains contracted to the Eagles until the end of the 2024 season, has endured his hardest campaign at Lathlain Park in his nine years at West Coast, but has remained committed to the club's cause for the coming years.
The 46-year-old played 306 games for the Kangaroos, a run that included two premierships, an All-Australian selection, a Syd Barker Medal and five seasons as captain.
New-appointed advisor Geoff Walsh is set to review the Roos' football department, mounting further pressure on David Noble's position as senior coach.
With the Roos having collected just the sole victory across the opening 15 rounds of this season, questions have been raised over the North Melbourne mentor's future.
Kangaroos president Sonja Hood recently wrote to members stating she shared their frustrations, with her sympathy for the club's most faithful fans only growing across the course of this year.
"When I wrote to members after round eight, I expressed frustration with our football performance to that point," Hood wrote.
"That frustration, shared across our club, has grown as the season has progressed.
"By round 15, with no discernible improvement, patience among our supporters and members is, understandably, wearing thin.
"We always knew this year would be hard, but the extent of our losses is deeply concerning."
Hood has backed in Noble for the time being however, with the club remaining on a pathway through their current list rebuild under the second year coach.
Noble has recorded just five wins from 36 games at the helm, a lowly start for the once-promising coach.
Simpson's win rate sits at 59.74 per cent, having notched up his 116th win last week from 195 games in charge of the Eagles.
West Coast's Round 15 win over Essendon saw the Perth powerhouse club leap the Roos at the foot of the ladder, with Noble's side currently anchored to 18th.