The 23-year-old was dismissed in the 52nd minute at Stamford Bridge on Saturday after bringing down Bafetimbi Gomis as he raced through on goal in the opening-day fixture.
France forward Gomis went on to equalise from the resulting penalty.
If the appeal is unsuccessful Courtois will be replaced by close-season signing Asmir Begovic for Sunday's trip to Manchester City who finished second in the league last season. – Reuters
Original source: Chelsea to appeal Courtois red card