Sausage And Sage Stuffing

Name: Sausage And Sage Stuffing
Ingredients: 1 tablespoon olive oil; 1 pound Italian or breakfast sausage, casings removed; 6 tablespoons unsalted butter, plus more for the baking dish and foil; 1 large loaf Italian bread (about 1 pound), cut into 3?4-inch pieces (about 16 cups); 2 medium onions, chopped; 4 celery stalks, thinly sliced; kosher salt and black pepper; 1/2 cup dry white wine; 2 1/2 cups low-sodium chicken broth; 2 large eggs, beaten; 1/2 cup chopped fresh flat-leaf parsley; 3 tablespoons chopped fresh sage