Millwall have doubts over Darius Henderson and James Henry ahead of the visit of Derby.
Striker Henderson and winger Henry were both forced out of Tuesday night's goalless draw at Watford with hamstring injuries and Millwall are waiting to discover the extent of the damage.
Andy Keogh will start up front if Henderson is ruled out while Josh Wright or Liam Feeney are possible replacements for Henry.
Skipper Paul Robinson remains sidelined by a pelvic problem and John Marquis is recovering from a groin op, but fellow forward Shaun Batt has trained after a calf injury.
Full-back Alan Dunne could return to the squad after missing out at Watford despite being available after a suspension.
Derby are likely to have an unchanged squad.
Jamie Ward has been named in Northern Ireland's squad for their World Cup qualifier against Azerbaijan at Windsor Park next week but the forward, who has missed the Rams' last seven matches with a hamstring injury, will not return at The Den.
``I can understand they want him in the squad but first and foremost he has to be fit for us, so he will not make the trip,'' said Derby boss Nigel Clough.
Jake Buxton had to settle for a place on the bench against Barnsley in midweek on his return from suspension as Clough kept faith with the central defensive partnership of Richard Keogh and James O'Connor. That might be the case again after a clean sheet in Tuesday night's 2-0 home victory.
However, Clough does have options should he wish to make changes elsewhere with the likes of Kieron Freeman, Michael Jacobs, Ben Davies and Nathan Tyson all itching for starting roles.
Goalkeeper Frank Fielding could return to training next week following his month-long absence with a groin injury.