I do not think Manchester City will sack Guardiola. Guardiola is the best coach in Manchester City's history. He transformed City from a mediocre club into the best club in europe. The team consistently showed great dominance in the Premier League. City also won the Champions League and FA Cup with the help of Guardiola.
Anyway, it is possible that if Guardiola fails this season, he will voluntarily leave Manchester City. Guardiola is only 54 years old. He will not think of retiring so soon. He will probably want to take on a challenge with a new team.
Guardiola's contract with City ends in 2027. So even if he fails, he may decide to stay at the Etihad until 2027. Whatever, I am pretty sure that Manchester City will not be the Premier League champion this season.
Sacking a coach that's given them their greatest achievements in history over few defeats? No I don't think they'll do that to him, if he had lost like 10 matches or more then they could consider replacing him but not sacking him so early the worst that could happen is Pep Guardiola resigning by himself if he noticed that this season is going to be a blunder with him as the head coach.
I would love him leaving Manchester City with a good record, I know that if he doesn't win the league or any trophy this season he might likely resign, he's a manager I admire so much and I'll love him to leave or resign from coaching in the EPL with a good record in his last season just like most legendary managers in the league.
In the previous season, we saw Manchester city lose several matches in a row. We saw city lose 5 successive matches. This was the highest consecutive defeat record of Pep guardiola's career. Even then , he was able to stabilize the team. At the end of the season, we saw a very consistent performance from City. And the team was able to occupy the 3 rd place in the table.
While they started this season with a big win in the first match against wolves, but their performance is weak now. Even then manchester city management will definitely not make a bad decision like firing Guardiola. With the help of Guardiola, City may not be able to play well now , but where will Manchester City get a more experienced coach than Guardiola at the moment ? I guess Guardiola will stay at etihad until the end of his contract.
I do not know why guardiola did not keep De Bruyne in his squad. The contract with de bruyne should have been extended. De Bruyne is 34 years old but he is one of the best midfielders of the current age . De Bruyne's absence is quite visible in City's gameplay.