Hanson has been struggling with a knee problem that restricted him to a brief cameo role in Saturday's defeat at Oxford, while central defender Duff missed out at the weekend due to a back injury sustained in the recent home defeat to Barnet.
Another centre-half, Steve Williams, and midfielder Tommy Doherty remain sidelined with hamstring and ankle injuries respectively and long-term absentees Simon Ramsden (calf/hip) and Michael Flynn (hernia) are still a few weeks away from contention.
Striker Jake Speight is hoping to play a bigger role after stepping off the bench for the final 30 minutes on Saturday.
Manager Peter Taylor has no suspension worries as the Bantams bid to get their play-off challenge back on track following back-to-back league defeats.
Source: PA
Source: PA