McCammon made his debut in Saturday's home win over Darlington and Threlfall, on loan from Liverpool, has appeared in the Bantams' last two matches. Grant will be the only addition to Taylor's squad.
Defender Zesh Rehman is still sidelined with a calf problem and James O'Brien has not yet recovered full fitness following a nose operation.
City have won two of their three games under Taylor and are chasing a third successive league win for the first time this season.
Source: Team Talk
Source: Team Talk