Austin is on the verge of earning his first call-up in a clash against Collingwood at the MCG on Sunday.

Hombsch is out for at least two weeks with a hamstring injury while Tom Jonas is still serving his lengthy suspension.

That has put former Belconnen Magpies star Austin in the frame after he signed a new two-year deal at the start of the season.

"[Alipate] Carlile will be one of the options, Logan Austin is the other," said Port midfield coach Michael Voss.

"Certainly we will have to make that adjustment. [Carlile] has had a couple games under his belt [in the SANFL] so he'll definitely come into consideration as will Logan."

Austin was taken with pick No. 69 in the 2014 draft but is yet to play at the top level.

His patience and work away from the AFL spotlight paid off when the Power offered him a two-year contract extension.

Port Adelaide defender Matthew Broadbent is certain to return to AFL action against Collingwood.

The influential Broadbent was a late withdrawal because of illness for Port's win against Melbourne in Alice Springs last Saturday.

Voss confirmed Broadbent will return against the Magpies in the MCG fixture.

Collingwood enter the match with four players in doubt after they suffered injuries in their loss to the Western Bulldogs last weekend.

Alan Toovey (concussion), Taylor Adams (hamstring), Alex Fasolo (shoulder) and Darcy Moore (collarbone) succumbed to injury but Voss refused to consider Collingwood as vulnerable.

"I never see an opposition as gettable more than another," Voss said.

"The fact is they will be replaced ... they are missing individuals but it's the actual group that turned it around for them.

"It's likewise for us. There are certain things we need to do ... but in the end we have got to buy in together to get it done."

- with AAP