RYAN Leonard could be out for an extra month after suffering a setback with his knee during shooting practice.
Leonard has been sidelined since going off injured in the 28th minute of the 2-1 win over Leeds on October 5. He had been expected to be back before Christmas.
"He was doing some shooting, the last bit of the last session," Lions boss Gary Rowett explained. "He was due to train this week and then it was about how quickly he could get back available, but he just felt his knee a little bit towards the end of the session.
"The prognosis is that he's going to be out for about another four weeks, so it's disappointing. But it's something you have to cope with with any player coming back from a long-term injury."
Rowett could also be without centre-back Shaun Hutchinson, who is struggling with a rib injury, for Friday night's clash with Nottingham Forest at The Den.
Rowett said: "It's one where he'd have to train [Tuesday], realistically. I'd say that's not likely to happen.
"Therefore he'd have to feel miles better for Thursday but then you're only talking about one day's training session in preparation.
"We'll see as the week goes on but there's a serious doubt he'll be available."
Meanwhile, right-back Jason McCarthy is unlikely to be available this month as he recovers from a foot injury.
Rowett added: "Macca again is probably a few weeks away. We've got quite an extensive list at the moment, but it's something you have to cope with in the Championship. It makes it more difficult to cope with when you've got a small squad."
Image: Millwall FC