The next surprise is likely to be a bit controversial, there have been rumors Pep Guardiola will leave the club after successfully bring Manchester City to the top of the Premier League and ucl, yes although I hope that never happens. But Pep's past at Barcelona became a reference where he left Barca when the team was experience great success because it win various competitions.
I have also read something like that about Guardiola thinking about leaving City in upcoming years but honestly I don't believe in it. Guardiola has a great team and top class facilities that any manager wish for and he has everything there. I don't think of any reason other than becoming of
sick of winning but I feel that since they have won their first CL, Guardiola will push for more and I feel he will stay at City for more years. People like Guardiola go on in search for challenges and I don't think there is much of challenges left to explore after LaLiga, Bundesliga and PL now.
Guardiola will end up leaving Manchester City by the end of his contract or a couple of years later or if he sees that managing a national team might be interesting for him, if the offer was interesting eventually
Looking at his track record in coaching, this is actually not something that is surprising for Pep because he must have gone looking for something new.
Examples of some previous cases when he was at Barcelona and Bayern. When Pep has got what he wants then he will definitely leave when his contract expires and so it is now.
Actually when looking at things like this, Pep is also planning to leave even from the previous season only he can still be held back but when his contract is over it is difficult to hold back and indeed he will definitely leave.
Despite that, he will still be honored and start his career with a new club or team and there could be a national team offer for him in the end.