It's structure vs freedom. Sarri's team play a very rigid form of football and movements that our players couldn't really play but didn't care for. Pirlo lets his players free to make choices and prefers footballing instincts. The thing is, we never had the proper players that suit Sarri's structured way of footballing and also not creative players for Pirlo to focus on creativity between the lines.
It just made 0 sense to appoint Sarri when it's known Matudi - Pjanic.- Khedira can't be a mid to play his preferred brand of football.
Pretty sure that’s why we also signed Ramsey and Rabiot for Sarri. He just couldn’t keep the former healthy (not many can), and took 6 months to even start using the latter. Again not his fault. And both are pretty mediocre anyways. Rabiot always, and Ramsey when out of form and fitness.
He’s also just a one-dimensional, rubbish coach who has zero winning mentality, and can’t motivate a top team for shit.
Would not be surprised if that played some part in it. Either way, we fucked up once with Sarri, a coach not suited to the club, to its philosophy, to the players we have here, and to winning in general, but we still managed to scrape the scudetto.
We had to get his replacement right to avoid catastrophe, and instead we bet on a rookie with zero experience, coming into a season with no preseason, packed fixture list, and a very unbalanced squad. Hard to believe management could make such a blunder.
I'm quite fond of Sarri and his backstory; however, it's clear that his personality does not mesh well with elite clubs such as Juventus and Chelsea ("elite"). With that said he still managed to achieve noteworthy results at both clubs and can be proud of that. Clubs such as Napoli, Roma, Arsenal, Sevilla, Lyon, Monaco etc which can be described as underdogs and more "humble" are a better match for him. And that's not a knock, it is just the reality for him and plenty of other managers, but what sets him apart is that he can achieve great things with these clubs as we saw at Napoli. Kovac is currently undergoing a similar experience at Monaco.