Adelaide are bracing to again be without lead ruckman Sam Jacobs for Saturday night's AFL game against North Melbourne.
Jacobs was sidelined last weekend because of a bruised knee and appears unlikely to recover in time to face the Kangaroos.
"It doesn't look like it but we will have to wait and see," Adelaide assistant coach Ben Hart told reporters on Monday.
"It might be another one to two (weeks), we don't know to be honest.
"He had scans, it is a knock to the knee, assume some sort of bruising."
But the Crows believe Paul Seedsman could play again in a month.
The winger was initially suspected to have suffered a season-ending knee injury in a round three loss to Geelong last Thursday night.
But scans revealed Seedsman had avoided damage to an anterior cruciate ligament but sustained severe bone bruising.
"A little bit of damage to the knee and ligament in the outside of the knee," Hart said of Seedsman's diagnosis.
"Bone bruising is an interesting one as to how long it can take but ... maybe a month is good news."
