Quag has never been a prolific goalscorer. We don't need to give him an entire season to find out what we already know. Throughout his career, he has been a 1 goal in every 3 games type of guy. Hence, if we give him an entire season, he isn't likely to score more than 15-16 goals.
At this point in time, I'd release all of our forwards, if it were both feasible and my decision. Unfortunately, it's not a very economic decision, and hence we must keep at least two of them. In that case, I'd rather keep the one who gives us something extra (Vucinic), and the youngest member with potential (Gio). As I have stated numerous times before, I'd then add Llorente (since he is almost a guaranteed purchase), one of Jovetic/Suarez/Sanchez, and either Immobile or Boayke. Fuck breaking even and balancing the books (one more season isn't going to kill us). Hence, if Jovetic or Suarez aren't going to command insane salaries, I'd definitely fork out the 35+ million required to acquire them and watch us become more competitive and clinical in front of goal.