Preheat oven to 350°. In a large bowl, combine onion, celery, carrots, ketchup, salt, paprika and pepper. Pat onto turkey thighs. Place 1 tablespoon flour in oven bag; shake to coat. Transfer turkey thighs to oven bag. , Place in a 13x9-in. baking dish. Combine broth, wine or additional broth, oregano and bay leaves. Put into bag; seal. Cut 2 slits into the top of the bag. Bake 1-1/2 hours or until a thermometer inserted in turkey reads 170°-175°., Remove turkey to a serving platter; keep warm. Pour pan juices into a small saucepan; skim fat and discard bay leaves. Bring to a boil. Reduce heat; simmer, uncovered, for 5 minutes or until mixture is reduced to 1-3/4 cups., In a small bowl, combine remaining flour and water until smooth. Stir into saucepan. Bring to a boil; cook and stir 2 minutes or until thickened. Remove skin and bones from turkey; cut turkey into slices. Serve gravy with turkey.