as for the post-allegri expectations, i hoped for the same pragmatic sarri who orchestrated napoli's best defense that got them those 91 points. (those who say that it was the attack that managed to collect those 91 points are completely wrong: they scored a lot less than in sarri's 2nd season, yet managed to be a much better team.) at chelsea, sarri also played a fairly defensive, safe football with that mediocre squad with 1-2 very good players.
now we're neither attacking enough, nor is defense is effective. yeah, it's partly due to the midfield. pjanic regressed a lot, he's having the worst run of form since his arrival, and so did matuidi unfortunately. but our poor defense is mainly down to the team as a unit: the high defensive line, the stubborn tactics ("i'd rather concede on the attack than park the bus for a second", fucking great idea), the obviously rusty zonal marking at set pieces, the fact that our fullbacks get confused after crosses, the predictable one trick pony tactics (no long passes, because they are risky, oh, the irony, like he would care about the risks of the high defending line), and of course the mental preparation. conte can motivate the running machine barella, that turd lukaku and epitome of mediocrity d'ambrosio, gasperini can get the best out of players nobody ever heard of, but sarri only improved bentancur and - to an extent - dybala (who got the last season completely wrong on an individual level, and changed his own attitude after the transfer saga). i get that the team was hard to motivate last season, and this got allegri fired, but in that case, a proper motivator might have been a wiser choice probably.
i'm not blaming sarri exclusively. having so many injuries, the lack of rotation options for bonbon, sandro, the weak right backs aren't sarri's fault. but during the previous seasons, the club faced the very same challenges every single time.
i agree, time is an issue. let's hope players like pjanic, sandro and bonucci get their shit together, and the old man at charge changes his attitude a bit. he shouldn't force what isn't working (fruitless possession, passing for the sake of it, high defensive line, too much distance between defense and midfield, zonal marking, wrong use of fullbacks, players played out of position just because 4-3-1-2, etc). okay, that's a lot, i admit. damn...