Nikola Zigic picked up two late bookings in the 3-1 defeat at Bolton, his second red card of the season, meaning the Serbia international will miss the next two games.
With Marlon King (knee), Peter Lovenkrands (calf), and Akwasi Asante (hamstring) all sidelined, Clark has only Jake Jervis at his disposal.
The 21-year-old striker has never made a senior start for the Blues but could be thrown in at the deep end against the league leaders.
Midfielders Papa Bouba Diop (hamstring) and Darren Ambrose (knee) are also absent, meaning Clark's options are further limited.
Defender Will Packwood missed the defeat at the Reebok Stadium with illness, but the American should be back available to face the Bluebirds.
- Sports & Recreation
- Peter Lovenkrands
- Akwasi Asante
- Marlon King
- Papa Bouba Diop
- Jake Jervis