I wouldn't buy that Pep rumour, unless he himself desperately asking to leave, I could see City boards will do anything to make him stay. And until now I have not heard or seen any single sign from Pep indicating he wants to leave either. More like journos assume that he has won everthing in England, and Allegri sacked at the same time, so in their logic Pep would be tempted to go to Juventus. That's pretty weak and baseless logic to begin with. Even if its true that Pep is their first target, that doesn't suddenly make it smooth either. There still a lot of factors that could prevent that happening.
At the moment, I believe Sarri to Juventus more likely to happen, than Pep to Juventus from what I read though. And agree, it would be mad if he reject Juventus now. Unless Hazard suddenly change his mind and commited to die for him, lol.