A calf complaint is likely to cost Orazio Fantasia a place in Essendon's AFL team for their Anzac Day clash with Collingwood.
Coach John Worsfold told SEN radio on Monday morning that his small forward is set to lose a race against time to be fit to play.
"He's pushing to try and get up but at this stage it looks like he'll probably miss," he said.
"We will obviously assess him again tomorrow and just get a feel for where he's at.
"Then it comes down to the medical call in association with how Fantasia is feeling. At this stage he's unlikely."
Fantasia's absence would be a blow for the Bombers given his 39-goal haul in 2017, underlining his place in Essendon's best 22.
The 22-year-old has already played on two Anzac Day games, including a critical four-goal haul last year that helped the Bombers to victory.
Fantasia had a slow start to the year, debuting in round three after knee surgery in pre-season.
Collingwood have a number of senior players on their injury list, including Taylor Adams, Jamie Elliott, Darcy Moore and Levi Greenwood.
Daniel Wells is finally off the Magpies' injury list but played in the VFL on the weekend making him a non-starter for the showpiece match.
Essendon's unavailability among senior players is much better, with Mitch Brown to face a test on his calf after being a late withdrawal from the club's win over Port Adelaide last week.
Patrick Ambrose is suspended for a VFL indiscretion and Travis Colyer is at least a fortnight away from a return due to a foot issue.