Place sausage, celery and onions in a large, deep skillet.
Cook over medium high heat until evenly brown.
Drain, crumble and set aside.
In a large bowl combine sausage mixture with cornbread, bread crumbs, chicken broth, poultry seasoning and sage.
Mix well and transfer to a 9x12 inch baking dish.
Bake, covered, for 45 minutes or until cooked through & Browned.