Eat at maintenance,..... than add 5 good sessions a week of HIIT. Try tire sled drags with a weight in it, start on 20kg and do 50m sprints, work up to 100m sprints. Do as many as you can in say 20-30min. That will shred you up without loosing much muscle. I'm not 100% sure on this, but if you try to loose fat, you will evidently loose a little muscle also, as your in a catabolic not anabolic state, maybe I'm wrong on the muscle loss, but I'm having good results with fat loss doing the above and I feel like I haven't lost much if any muscle, I definitely got a bit stronger as my lifts a creeping up, and HIIT cardio has had a tremendous affect on my breathing when doing heavy squats, its way better now.