In a saucepan, cook pasta as directed on package. Drain; cover to keep warm.
Meanwhile, cut turkey into equal strips. Chop spinach.
In a skillet, heat olive oil on medium heat. Add minced garlic, onions and celery, sauté until onions are golden brown. Stir in turkey and cook until no longer pink. Stir in canned tomatoes, cover while stirring occasionally - 20 mins. Stir in sour cream and spinach and let it cook for another 2 minutes.
Serve sauce over cooked pasta. Sprinkle with parmesan cheese and parsley.