He got the results that should have been expected. Look at our midfield this season. Full of has beens and upstarts. Having both Dybala and Morata fit throughout the season would have made a huge difference as well. In the end Cuadrado, Ronny, Chiesa, McKennie and De Ligt saved us from Europa League.
In a very broad sense, he has the same philosophy as Sarri but I don't agree that they're equivalent managers. Pirlo copped bad luck. Sarri made his own. Don't forget that Pirlo was a general in two great midfields of the modern era. The man knows tactics, how to communicate and read a locker room. But the squad he had to manage were too inadequate, inexperienced and unbalanced. Hard to realise a certain football philosophy whilst directors take turns to shit in your lap.
I'd be content to keep Pirlo and Dybala. Let Morata lead the line. McKennie, Chiesa and Kulusevski will likely improve. Just turf half the midfield and construct something out of quality that complements itself and the team. I don't love two man midfields either to be truthful. I hope that if we were to keep Pirlo, he wouldn't be stubborn about systems.