Turkey with Herbes de Provence and Citrus

Ingredients

• 1 turkey, weighing 14 to 15 pounds, with neck and giblets reserved
• 1 orange, sliced into wedges
• 1 lemon, sliced into wedges
• 1 onion, sliced into wedges
• 6 sprigs of fresh rosemary
• 6 sprigs of fresh sage
• 6 sprigs of fresh oregano
• 7 tablespoons of unsalted butter
• 2 tablespoons of herbes de Provence
• 1 tablespoon of olive oil
• 1 1/2 teaspoons of salt
• 1 1/2 teaspoons of freshly ground black pepper
• Approximately 6 cups of canned low-salt chicken broth
• 1/3 cup of all-purpose flour