McCourty, listed as out on Friday, underwent surgery Tuesday morning after he broke his forearm in last Sunday's 29-10 victory over the New York Giants.
Rookie fourth-round pick Alterraun Verner will start in McCourty's place.
Starting defensive tackle Tony Brown (knee) is listed questionable after a full practice Friday. Brown's routine has been to rest his surgically repaired knee early in the week and practice on Friday. He has not missed a game.