Darby's inclusion in the side is the only change made by McCall from the eleven players who started in the club's previous league game against Oldham Athletic last weekend.
With Josh Cullen away on international duty, Daniel Devine will move up from the right back berth he occupied in the Oldham fixture into his more familiar midfield role, allowing Darby to slot into City's back four.
Billy Clarke, Romain Vincelot, Nicky Law, Colin Doyle and Mark Marshall all return to the side after being rested for Tuesday's Checkatrade Trophy group match with Stoke City.
Vincelot will skipper the side.
Matthew Kilgallon and Filipe Morais are joined by apprentice duo Kwame Boateng and Ellis Hudson on the bench.
James Hanson isn't risked as he continues to recover from a calf injury. Fellow attackers Marc McNulty and Haris Vuckic are also not involved for City at The Den.
| MILLWALL | BRADFORD CITY |
| 1. Jordan Archer | 1. Colin Doyle |
| 3. Joe Martin | 2. Stephen Darby |
| 5. Tony Craig (c) | 3. James Meredith |
| 6. Shaun Williams | 4. Nicky Law |
| 7. David Worrall | 6. Romain Vincelot (c) |
| 8. Ben Thompson | 7. Mark Marshall |
| 11. Gregg Wylde | 8. Timothee Dieng |
| 12. Mahlon Romeo | 10. Billy Clarke |
| 17. Byron Webster | 11. Jordy Hiwula |
| 20. Steve Morison | 22. Nathaniel Knight-Percival |
| 22. Aiden O'Brien | 24. Daniel Devine |
| Substitutes: | Substitutes: |
| 31. Tom King (GK) | 12. Rouven Sattelmaier (GK) |
| 10. Fred Onyedinma | 20. Filipe Morais |
| 15. Sid Nelson | 25. Reece Webb-Foster |
| 16. Calum Butcher | 26. Matthew Kilgallon |
| 28. Jamie Philpot | 31. Kwame Boateng |
| 30. Harry Smith | 32. Ellis Hudson |
| 33. Noah Chesmain |