Veteran Melbourne midfielder Jack Viney will miss his fourth consecutive AFL match after the club deemed him still not ready to return from concussion.

Viney was named in the Demons' extended squad for Sunday's clash with St Kilda in Alice Springs, but the decision was made not to play him following Friday morning's training session.

The 31-year-old hasn't played since suffering delayed concussion symptoms following the club's round eight win over West Coast on May 3

"Jack has been slowly improving but unfortunately is not quite ready to return this week," Melbourne's general manager of football performance Alan Richardson said.

"Following our training session this morning, it was decided Jack wasn't quite ready for the demands of an AFL game.

"The objective measures are tracking well, and he will still travel with the team to Alice Springs where he will complete a game-load training session."

West Coast star Jeremy McGovern was concussed in the same game as Viney, and his future hangs in the balance.

McGovern, who has suffered multiple concussions in his decorated 197-game career, must front an expert concussion panel to be cleared to play again.

West Coast are still unsure when that panel will be assembled, with McGovern restricted to light work in the meantime.

"Gov's doing well. He's been in the club this week, and he's been really active in our meetings," said West Coast coach Andrew McQualter.

"So he's in a good spot, and we'll just wait until he'll hear further (from the panel)."

Melbourne (5-6) have made just one change for the match against St Kilda, with Bailey Laurie replacing Charlie Spargo (broken scapula).

St Kilda (4-7) have named former Blue Jack Carroll for his Saints debut, while Dan Butler is back at AFL level after overcoming an achilles injury to make two appearances in the VFL.

Darcy Wilson and Liam O'Connell were dropped.

West Coast have recalled young forwards Jack Williams and Archer Reid to replace Jake Waterman (shoulder) and Bailey Williams (managed) for Sunday's match against Geelong in Perth.

First-year midfielder Bo Allan returns for his second match of the season in place of Tom Gross.

Geelong's only change was naming Connor O'Sullivan in place of Jed Bews (managed).

Meanwhile, Cats premiership midfielder Tom Atkins has signed a two-year contract extension, tying him to the club until the end of 2027.

Atkins, who was set to become a free agent at the end of the year, is averaging career-high numbers in contested possessions (11.45) and clearances (5.55), while also leading the competition in tackles, averaging 9.9 per game.