my brother is wanting lose as much weight asap hes not to worried about muscle loss. he has taken about 3-4 years off the gym and has gained alot of extra weight. he is goin to be traing m-w-f and doin cardio 5 days a week. what would be the best way to achieve this goal without worrying about muscle?

ya im goin to have him shed some before he get its aas or enything.