Cohen begins a three-match suspension following an unsuccessful appeal against the red card he received during the defeat to Leeds.
Anderson underwent a series of scans this week to determine the extent of a rib injury he sustained at Elland Road.
Club captain Paul McKenna remains a doubt with the groin problem that ruled him out last weekend.
However, there was some good news for boss Billy Davies after Paul Konchesky resumed training following a hamstring injury. The on-loan Liverpool defender could come back into the reckoning.
Midfielder Guy Moussi is also back in training after being sidelined since February with a thigh problem, but he is short of match fitness. Defender Kelvin Wilson and strikers Dexter Blackstock and Robbie Findley remain out.
Source: PA
Source: PA