If they want him to regain his quickness - then it's all about body fat. ( average BF%[20-24] people don't really feel any change in their breathing after bulking up [unless they don't cut], but for the guys with 5%-14% body fat - bulking up is worst process as you will feel like shit and unhealthy.
Assuming JV's body fat is perfect, then he'll have to stop protein intake and "burn" his muscles. That would be stupid thing to do, right. It's all about body fat. At least his wife can get excited - JV will have Blake Griffin's abs.
Everything is good. By cutting fat JV will be quicker and will take longer to get winded.