Sheffield Wednesday defender Anthony Gardner is expected to return.
Gardner missed the midweek win over Birmingham due to a hamstring problem and was replaced by Mark Beevers, so manager Dave Jones must decide whether to make changes.
The Owls' latest signing Rodri made a goalscoring debut on Tuesday night before being replaced after an hour and he will be hoping to continue in the starting line-up, but another summer recruit, Nejc Pecnik, and Gary Madine offer Jones a couple of alternatives.
Wednesday, unbeaten in the 16 games played since Jones replaced Gary Megson as boss in March, climbed up to second in the table and there are unlikely to be too many changes after their impressive midweek display.
Millwall are likely to be unchanged.
Boss Kenny Jackett has no new injury problems after the Lions collected their first win of the season at Peterborough on Tuesday night.
Jack Smith is expected to miss out again with a thigh strain so Scott Malone continues at left-back.
Fellow summer signing Karleigh Osborne made his debut in a new-look back four at London Road and is set to keep his place alongside Shane Lowry at centre-half.
Skipper Paul Robinson has had an injection in a bid to speed up his recovery from a hernia op and hopes to be in full training by the end of the month.
Midfielder Tamika Mkandawire (knee) is pencilled in for a reserve outing next month.