So far-fetched from me. My bad. Admittedly I assumed that this short-term contract extension was a marriage of convenience for both parties until a verdict in court was reached on the most serious allegations of cheating in British football history. Nevertheless, you have now convinced me it is purely coincidental that your current manager has signed a short-term contract just like your previous manager did at a time your owners could sense that changes were afoot.
As you said - let's instead focus on City's current manager rather than his predecessor. Guardiola evidently has the enthusiasm to continue managing City, going into the next 2 seasons, regardless of the impending court case verdict, and he has never hinted at anything otherwise. Had he gotten any inclination that his employers were breaking the rules, I'm sure he would have resigned instantly, given his previously squeaky-clean record when it comes to alleged cheating in football.
Now, thanks to your clarification, I cannot see how this short-term contract extension could in any way benefit both parties until a verdict is reached in court. The dust will settle after the club is inevitably cleared of all 115 charges and Guardiola will hand over the torch to his successor a few weeks before his contract is due to expire. Any suggestion that a change in management could occur 12-18 months prior to Guardiola's contractual end date is nonsensical, illogical and certainly not based off the club's previous succession planning.