Manager Peter Taylor said: "We've been told they have looked at it and could not come to an agreement so that would seem to suggest we have some sort of case.
"We are just waiting to find out the outcome of the decision, but we should know what the situation is some time this week."
Whittle missed the win over Shrewsbury after picking up 5 yellow cards, and would remain on the sidelines for City's next game against Wrexham if the red card appeal is unsuccessful.