The Chicago Bears say quarterback Jay Cutler will miss Monday's game at San Francisco because of a concussion. Jason Campbell will take Cutler's place as the starter. The 49ers coach, Jim Harbaugh, returned to work Friday after undergoing a minor procedure for an irregular heartbeat. Harbaugh turns 49 on December 23rd, and was away from the team Thursday for his procedure at Stanford Hospital. Harbaugh is to coach Monday's game.