A group of fans reported to police that some spectators were making racist remarks and gestures to people in the crowd during the match, which took place at Pride Park Stadium on Saturday October 15, 2016.
Derbyshire Police have been working with colleagues in West Yorkshire Police as part of the investigation and released images of two men they wanted wanted we speak to.
A Derbyshire Police spokesman said: "Two men have been traced and will be spoken to in due course."