It won't be like last year, even with the QO, for a bunch of reasons. Last year Fowler had a very good year at 3.3 WAR but that was immediately prefaced by a stretch where he was basically a 2 WAR player for 3 years. By amassing a 4.7 WAR season following a strong 2015 this guy has shown 2 year sustainability of holding or improving offensive numbers all the while playing the best defense of his career. Then you have the competition. Last year there were a ton of FA OF, thus year Fowler is the second best OF on the market after Cespedes. Teams are going to look at him as a 3.5 WAR player in 2017 with not much of a drop off in in 2018. Depending on how many suitors there are for his services, and their should be many, $15 mil AAV over 4 years is probably the bottom of his market. If the 4 years aren't there someone will overpay for 3. My best guess is 4 years $64 mil, or in the 3 year scenario somewhere around $48-$52 mil. To sum it up you're looking at a guy that you can pencil in and about a .350 wOBA to hit leadoff with 15 HR pop and who has moved from a negative defensive player to a positive one. He's getting paid handsomely from someone.