Preheat oven to 325°. Remove giblets from turkey; cover and refrigerate for gravy. Pat turkey dry; place breast side up on a rack in a roasting pan. In small bowl, combine softened butter, thyme and sage. With fingers, carefully loosen skin from turkey breast; rub butter mixture under the skin. Sprinkle salt and pepper over turkey and inside cavity; fill with celery, onion and carrot.
In a large saucepan, melt cubed butter; stir in wine. Saturate a four-layered 17-in. square of cheesecloth in butter mixture; drape over turkey. Bake turkey, uncovered, 3 hours; baste with wine mixture every 30 minutes, keeping cheesecloth moist at all times.
Remove and discard cheesecloth. Bake turkey until a thermometer inserted in the thigh reads 170°-175°, basting occasionally with pan drippings, 45 minutes to 1-1/4 hours longer. (Cover loosely with foil if turkey browns too quickly).
Remove turkey to a serving platter; cover and let stand 20 minutes before carving. Discard vegetables from cavity. Pour drippings and loosened brown bits into a measuring cup. Skim fat, reserving 1/3 cup. Add enough broth to remaining drippings to measure 4 cups.
For gravy, chop reserved giblets. In a large saucepan, saute giblets in reserved fat until browned. Stir in flour until blended; gradually stir in broth mixture. Bring to a boil; cook and stir until thickened, 2 minutes. Serve with turkey.
Freeze option: Place sliced turkey in freezer containers; top with any cooking juices. Cool and freeze. To use, partially thaw in refrigerator overnight. Heat through in a covered saucepan, gently stirring and adding a little broth or water if necessary.