I just don't like how Sarri does not seem to have any form of alternative strategy/tactics. Yes, Allegri's football wasn't great to watch last season, but the man did come up with different tactics for various phases of the game, worked on set pieces, and knew how to organise defensive structures.
Sarri is just all over the place, our defensive unit is suspect, our set pieces are non existent now, and we have no plan B when things aren't going well..