This is, he has no idea when his body will be ready:
“Oh, man, it’s not like in the past,” Cobb said. “I’ve had ankle injuries, shoulders, whatever. You can fight through it as a competitor. You can handle the pain and know you’re not going to do any further damage to yourself.
“There is no way to do that with this kind of injury. It’s with you every second of the day. You’re not going to be able to fight through it until your body tells you you’re good.”
A good story about it in the Tampa Bay Times in which Cobb sounds both realistic about his condition yet optimistic about his prospects.