Millwall will have to make do without the services of James Henry for the remainder of the season.
The midfielder suffered a knee injury Saturday's 1-0 defeat away at Leeds United.
Despite the fact that he was able to return for the remaining five minutes of the contest at Elland Road, Millwall physio Bobby Bacic has said scans have confirmed that the 23-year-old will play no further part this campaign.
"Further to a scan result, we can confirm that James has ruptured his left knee's lateral ligament," Bacic told the club's official website. "James will see a specialist on Monday but he will now miss the remainder of the season."
Henry joined Millwall on a permanent deal from Reading in 2010.