Sears has an ankle injury and trained with City's physio on Thursday whilst Baker has a sore back and has not trained this week.
Marcus Hall is expected to only play a bit part in what will be his final appearance for the Sky Blues as Martin Cranie looks ok to play following a knee problem.
Former City player John Eustace is expected to play for Watford who have injury concerns about Jay DeMerit, Will Buckley and Ross Jenkins.