I would think that even if the suspension is withdrawn by Goodell and his thug monkeys, that Brady still has grounds for a civil action. He can claim, it seems to me, that he was the victim of a malicious campaign by the Commissioner, acting on behalf of unknown parties, or in concert with same, to smear his reputation, good name, etc, and in doing so also threatened and/or harmed his current and potential revenue associated with "Brady Inc." (I made that name up to represent Brady's brand, his ability to market himself based upon his reputation both on and off the field).
Discovery is a 2-edged sword, and Goodell and his thug monkeys might be well advised to settle with Brady for whatever demands he makes, otherwise if Discovery shows evidence of a conspiracy or even intent to harm Brady absent verifiable evidence that he violated any part of the NFLCBA, then the NFL's front office is in deep Kimchi and it will only go downhill from there.