to be very honest with you, at 18%bf, you should avoid any cycles. Diet, Cardio, and ECA will get you down to 10-11% in no time but you'll have to be dedicated 110%.

BUT, if he wants to cycle, and you already explained to him that anabolics will not make bodyfat vanish. Then, some test prop should be enough to keep his muscles intact while losing bodyfat. However, if he's an experianced user, which he doesnt seem to be, then he could run Test/Tren/Mast and it should help him recomp his body, but only with a proper DIET AND CARDIO.