Preheat the oven to 325 F. Rinse the brined turkey under cold water; pat it dry, inside and out, with paper towels. In bowl, mix softened butter, 1/4 tsp. salt, the pepper, and thyme. Stir in citrus juices (not all juices will be incorporated). Rub turkey with seasoned butter, inside and out. Fill cavity with onion, celery, bay leaves, and garlic. Skewer turkey neck skin to back. Tuck drumstick ends under band of skin across tail, if available. If there is no band of skin, tie drumsticks securely to tail. Twist wing tips under back. Place turkey, breast side up, on rack in roasting pan. Insert a meat thermometer into center of an inside thigh muscle, taking care not to touch bone. Pour chicken broth in roasting pan.