Speculative theory: Man City and the PL are in a deadlock, because Man City threaten to take the PL to court over FFP being anti-competitive if they are stripped of their titles and/or demoted a few divisions. Both parties know that Man City would have a very good chance of winning such a case, which would go against the interest of the PL and its big six cartel, and thus a compromise will be reached where parties will just kick the can down the road indefinitely as long as Man City play ball going forward.