There's a number of theories that will work, and have both pro's and con's to them. My personal opinion on this topic is the good ol' low carb diet. STOP eating carbs such as pasta, potato's, corn, breading, etc. Any carbs you take in while you diet will be residual carbs from the allowed foods such as those found in green veggies. Your going to go crazy for about a week before you start using ketones and your body gets used to the no carbs. Untill your used to it you might want to cut back on the weight for the simple reason your body will not have the carbs to fuel it, and it will not be converting the fats completely. This will leave you with a feeling of weakness but it does go away. To protect your muscle you will want to up your protein intake about half gram/lbm. If your trying to take anything while you cut try clen. Personal opinion on a clen cycle while cutting:
day 1:50mcg
2: 60 mcg
3: 70 mcg
4: 80 mcg
5: 100 mcg
Stay on for the remainder of two weeks at 100 - 120mcg/day then drop to 80 for two days then off for 5. After the 5 days clean start back up and do it again. This is what i've recommended to clients who have asked my opinion and it has worked well for them.
Just my .02. Hope it's usefull!