The Blues will find out shortly if the decision is overturned by the FA.
Whatmough was given his marching orders in the 81st minute of Saturday’s 1-0 loss at Stadium MK for serious foul play.
As things stand, the defender will serve a four-match ban, missing tomorrow’s trip to Swindon along with games against Bristol Rovers, Accrington and AFC Wimbledon.
However, after watching the replay back, Danny Cowley revealed the Blues have appealed and hopeful of it being successful.
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Cowley said: ‘I’m a positive guy! The FA will see a challenge that was wholeheart. He had a bad touch.’
Should the appeal prove unsuccessful, Whatmough will be available for Accrington’s visit to Fratton Park on the final day of the season.