After all, if that really happened, then on what basis was Pep Guardiola sacked?
It makes absolutely no sense to sack Pep and also, Pep departure or move from Barcelona to Bayern Munich and then to Manchester City, it happened because of his own will and not because of the wishes of the club owner or boss you mean. Also about Spalletti, basically Spalletti wants to leave even though there has been an offer to extend the contract. So yeah, it doesn't really make sense for them to be fired because anyway, the reality is the club still wants him to stay, but they have their own choice to stay or leave.
Agree. It doesn't make sense to fire Pep Guardiola? He already won many trophies, he even won treble winners for Man City in the last season. As far as I know, he also has no bad issues both with Man City management and the players. So, how can Man City sack/fire him? I assume it is just a rumor, no need to think seriously.
By the way, Man City will be difficult to get a coach as well as Pep Guardiola if he leaves Man City. For me, Pep Guardiola is the best coach for the last season. No other coaches who can win treble winners like Pep Guardiola got in the last season. He is a special coach, every club must dream to have him in their squad.