Geelong forward Luke Dahlhaus faces an extended stint on the sidelines with a foot injury - but Optus Stadium isn't to blame.
Dahlhaus is no guarantee to play again this season, with Cats coach Chris Scott ruling him out for the "medium term".
Scott couldn't put an exact figure on how many weeks Dahlhaus will miss, and he isn't prepared to reveal the exact nature of the injury just yet.
But he is hopeful Dahlhaus will be back in 2020.
"It's a hard one to pinpoint. And that's why I don't want to elaborate on the exact nature of it because it's beyond the scope of my expertise," Scott said of the injury.
"The onset was quite slow, and it took us all a little bit by surprise.
"It's not a matter of him being back in a couple of weeks, it will be a little bit longer than that."
Dahlhaus played in last week's 22-point loss to Collingwood in Perth.
Optus Stadium has been blamed for a spate of foot injuries in the past due to its perceived hard surface, but Scott said the venue wasn't to blame for Dahlhaus' setback.
"We've only been on there once," Scott said.
"The players found it quite good, and it was quite wet in the lead-up to the game.
"After not having many games there for a period of time, rain in the build-up, and only being on there for a shortened game, I'd be staggered if we can draw the conclusion that Optus Stadium was an issue."
Scott confirmed Mitch Duncan (hamstring) and Tom Stewart (broken collarbone) would return for Monday night's clash with Fremantle in Perth.
But skipper Joel Selwood (hamstring) and Gary Ablett (personal reasons) will be missing, along with Dahlhaus.
Ablett left the club's Perth hub last weekend to return to Melbourne to be with his young family.
The Cats are hopeful Ablett will return to the team set-up later this season, but Scott won't put any pressure on the 36-year-old.
"He needs his space to prioritise the most important things in his life, which he's doing," Scott said.
"He doesn't need me or anyone else checking in on him every five minutes to see how he's handling it.
"We're confident it could open up that he can come back and play for us. That's very much the plan at the moment.
"But if anything changes in his personal life which means he can't come, then that's what will happen. There won't be one second of discussion to the contrary."
Fremantle will again be without skipper Nat Fyfe (hamstring), while spearhead Jesse Hogan (calf) isn't ready to return.