NEIL Harris has made three changes to the team that drew at Blackburn Rovers as his Millwall side gear up for another big relegation clash.
Michael Obafemi comes back into the starting line-up after coming off the bench at Ewood Park and scoring his first Lions goal.
Duncan Watmore has come in for the injured Aidomo Emakhu while Joe Bryan makes his first start under Harris and his first start since serving his three-game suspension.
Dropping out along with Emakhu are Ryan Longman and Danny McNamara, who made a mistake for the Blackburn goal in midweek.
Shaun Hutchinson has returned to the bench as he looks to make his first Millwall appearance since New Year’s Day.
As for the visitors Birmingham, caretaker boss Mark Venus – still deputising for Tony Mowbray who has an unspecified illness – have made five changes from their 1-1 draw at Hull City on Tuesday night.
Koji Miyoshi, Paik Seung-Ho, Jay Stansfield, Alex Pritchard and Marc Roberts all come into the starting line-up.
Dropping out are Ethan Laird, Tyler Roberts, Andre Dozzell, Siriki Dembele and Jordan James.
Only a point separates these two in the table with Millwall two clear of the relegation zone and Birmingham only being a point above the bottom three.
Millwall have lost just one of their last 10 games against Birmingham.
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Millwall: 4-4-1-1: Sarkic; Leonard, Cooper (c), Tanganga, Bryan; Watmore, Mitchell, Saville, Honeyman; Flemming; Obafemi.
Subs: Bialkowski, Wallace, McNamara, Norton-Cuffy, Longman, Hutchinson, De Norre, Esse, Mayor.
Birmingham: 4-2-3-1: Ruddy (c); Drameh, Aiwu, Roberts, Buchanan; Sunjic, Seung-Ho; Bacuna, Pritchard, Miyoshi; Stansfield.
Subs: Etheridge, Laird, Dozzell, Gardner, James, Hall, T. Roberts, Dembele, Jutkiewicz.