Preheat oven to 350°.
Combine first 4 ingredients. Make 12 (1 1/2-inch) slits along 1 side of roast, and stuff slits with fennel mixture. Place the roast, slit side down, on a shallow roasting pan coated with cooking spray. Rub remaining fennel mixture over the top of the roast.
Bake at 350° for 1 hour and 10 minutes or until a thermometer registers 155° (slightly pink). Transfer roast to a serving platter. Add wine to pan, scraping pan to loosen browned bits. Pour wine mixture into a saucepan. Bring to a boil over medium-high heat. Reduce heat, and simmer until reduced to 2/3 cup (about 8 minutes). Remove from heat. Pour accumulated juices from serving platter into wine mixture. Serve wine mixture with pork.