Not bloody likely. He'll have his clearance back in three years, just in time to assist Hillary's campaign with document "control" once she emerges from her primary "fight." As far as his clients go, I'm sure other arrangements have been made. As far as people who worked for him, since when did Clintonoids give a rat's rear end for their underlings? Being expected to "take one for the team" is a hiring requirement for these people.
This guy will have a difficult time getting a mortgage in the future to say nothing of another security clearance.
Forget the 3 year thing! It doesn't mean anything.
After the three year period is up, he will be eligible to apply for another clearance, based on his need for access to documents etc. at that time. However, it doesn't necessarily mean that he will be granted a clearance after his "time" is up. And it probably means that his higher lever clearances are a thing of the past. Heck, he'll probably be lucky is they give him a conditional "Confidential".