DANNY Shittu has been ruled out for the rest of the season.
The 33-year-old centre back hobbled off against Derby earlier this month with an Achilles injury.
Shittu, who has made 23 appearances this term, was seen at The Den prior to Saturday's 0-0 draw with Charlton walking around in a protective boot.
And the Lions' fears about the defender's injury have now been confirmed by a specialist, who has ruled that Shittu will miss the final ten games of the campaign.
Manager Ian Holloway said: "Danny has seen a specialist and he'll definitely be out for the rest of the season."
Since Shittu was sidelined, club captain Paul Robinson has stepped in – and Millwall have only conceded one goal in their last three games.
"We're defending from the front as well and that is absolutely vital," Holloway added.
Lee Martin (knee) and Richard Chaplow (Achilles) missed last weekend's south London derby stalemate and have not trained since.
Holloway will also be without Shaun Williams for Saturday's trip to Leeds United, with the midfielder suspended for the next two games.
But Williams' absence could pave a return to the fold for Jimmy Abdou.
"Jimmy would have been in the squad last Saturday but he was ill," Holloway said. "Jimmy's been there or there abouts for a while now.
"Shaun left his foot in on someone, it was totally innocuous but he got booked and that was his tenth of the season.
"He said it was nothing, but it was something and he shouldn't have done it."