DANNY Shittu will have a scan today on the injury he sustained in Millwall's 1-0 win over Derby at the weekend.
Shittu limped off midway through the second half and Lions boss Ian Holloway fears the defender could now miss the next three weeks.
DJ Campbell will also have a scan to determine the extent of a hamstring strain, while Scott Malone and Shane Lowry are doubtful for the trip to Blackpool on Tuesday.
Holloway said: "Injuries are an occupational hazard for everybody.
"We have got a problem with Malone – I don't think he is going to make it make it. Danny definitely won't play and he's probably out for the rest of March.
"He is having a scan today and his injury looks the most serious from Saturday. He might have torn something just above his Achilles.
"DJ is having a scan on his hamstring later and he might be out for two to three weeks, but Danny's looks worse than that.
"Shane's got a really sore foot and I'm not sure whether he'll be fit. We've got a few walking wounded."
Holloway also revealed that Jermaine Easter's thigh strain, which ruled him out of the the Rams game, could keep him out until April.