I wish you had mentioned the CEO thing first. Former CEOs get special tax treatment. That changes things.
is a tax practice area of its own. Termination packages, back pay to settle buyouts, stock buyouts, deferred compensation, office space, health care, stock option buyouts, can all be part of the arrangement you might be working on.
I can't do your question justice without knowing more about the arrangement, what was given up, the deal struck, etc. A copy of the agreement and some consulting time is appropriate here.
I will make an Offer to assist, but the issues involved and complexity
are as yet unknown. I will offer you 1 hour of consulting, which should be enough to review the agreement or help draft it.
I'm sorry I can't finish this for the price posted.