Cullen replaces Filipe Morais in City's starting line up, with the rest of the side staying the same from last Saturday's home win over Shrewsbury Town.
James Hanson has not travelled with the squad to the Kassam Stadium after McCall decided to err on the side of caution following the striker's recent spell on the sidelines.
| OXFORD UNITED | BRADFORD CITY |
| 1. Simon Eastwood | 1. Colin Doyle |
| 4. John Lundstram (c) | 2. Stephen Darby |
| 9. Wes Thomas | 3. James Meredith |
| 10. Chris Maguire | 4. Nicky Law |
| 11. Alex MacDonald | 6. Romain Vincelot (c) |
| 14. Josh Ruffels | 7. Mark Marshall |
| 16. Phil Edwards | 8. Timothee Dieng |
| 18. Joe Rothwell | 10. Billy Clarke |
| 20. Ryan Taylor | 11. Jordy Hiwula |
| 25. Charlie Raglan | 14. Josh Cullen |
| 33. Chey Dunkley | 22. Nathaniel Knight-Percival |
| Substitutes: | Substitutes: |
| 13. Benji Buchel (GK) | 12. Rouven Sattelmaier (GK) |
| 5. Curtis Nelson | 18. Marc McNulty |
| 7. Dan Crowley | 19. Haris Vuckic |
| 15. Kane Hemmings | 20. Filipe Morais |
| 21. Tyler Roberts | 23. Rory McArdle |
| 22. Sam Long | 24. Daniel Devine |
| 28. Marvin Johnson | 26. Matthew Kilgallon |