New signings Justin Cochrane and Jem Karacan are both vying for their Lions debut in Saturday's crunch League One clash at Oldham Athletic.
Both Justin and Jem yesterday joined on a short-term and one-month loan deal respectively and have been added to Millwall's squad.
Lions boss Kenny Jackett will be forced to make at least one change to the side that lined up against Leyton Orient with midfielder Marc Laird starting a three-match suspension after his straight red card in that game.
Joining Laird on the sidelines are fellow midfielders Alan Dunne (ankle), Dave Brammer (knee) and Adrian Forbes (muscle strain).
Top scorer Gary Alexander (ankle) is out for up to four weeks, although pacy frontman Lewis Grabban could be fit having missed the Orient game with a hamstring niggle.
Meanwhile Latics manager John Sheridan is facing a selection headache following confirmation this week that top scorer Lee Hughes will miss the rest of the season.
Hughes, who bagged a hat-trick at The Den when the two teams met in December, has been sidelined with persistent groin problems since January that now requires surgery.
Fellow frontmen Craig Davies and Lewis Alessandra are both suffering from injuries and are unlikely to feature this weekend.