That is nothing to do with why the allegations won't stick, imo. The PL simply won't have the evidence to prove any of their more serious allegations. They don't have access to where any incriminating evidence would be maintained and, even if they had a whistleblower, which I can't imagine they do, he would have to have, for example, contracts signed by the various parties which show the conspiracy that is alleged, otherwise it is one man's word against the club's "irrefutable evidence". No one with access to that level of information will be welching on Mansour, even if the club/owner/sponsors did what is alleged, which I can't imagine for one moment they did.
I have my own theory about the PL's actions. the club's actions, the pressure from other clubs and Masters' weakness and the likely outcome of the panel and it all points to exoneration on everything except, maybe some missed disclosures.
All imho, of course.