I think Sarri has to try a 4-2-3-1, it would a lot more creativity and support defensively as well, maybe not a long term sollution but it would make our team more fluid! play Pjanic next to Bettancur in midfield, Ronaldo and Costa on the Wings Higuain as a striker and Dybala right behind him!
sarri is talking about balance all the time. as things stand now, we can't barely fit 3 straight out attacking players in our team, let alone 4. costa, higuain, dybala and ronaldo will never be on the pitch all together, unless we're already fucked and need a goal badly. it won't be and shouldn't be our first plan.
the peak of our previous 4-2-3-1 experiment was vs barcelona (home game, 3-0). from that game, we're missing dani alves, mandzukic, khedira, chiellini, and we have ronaldo who can't be benched. comparing the two squads, de ligt is an obvious chiellini replacement, bentancur could double for khedira, cuadrado could still play rw, but we don't have neither a dani alves, nor a mandzukic. costa fans will argue that dc could play left winger, but that would leave pjanic and sandro covering for the entire left side. and no, costa can't regularly track back just like mandzukic did with ease on a weekly basis. matuidi could play lw like he did with the world cup winning france team, but tuz would crucify both him and the coach for the failed experiment. a couple of months ago, when matuidi looked a lot fresher, it would have been worth a try.
sarri will stick with at least a 3-man midfield, and considering the players at our disposal and their form, i agree.