I don't think Sarri prefers to attack down a specific flank. Whichever fullback is attacking, the opposite goes into a back 3. I think both fullbacks should attack and defend.
Not about the side of attacking imo, he usually use an inverted forward on the left flank who drifts to the center, as a result the LB has space to push high and wide on the left. On the right side the winger stays wide and slightly deeper so the RB also stays deeper.
So in the end it mostly depends on the side of the inverted foreword if we play 4-3-3 and I think CR will play that role. Any other formation and you are right
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I think some of you are incorrect in assuming we will line up just like Napoli did under him.
I Just think he believes in his system and very committed to play his way and the type of coach to ask players to adept rather then adept to the players, also why he failed at Chelsea imo. I Can't see him coming here to re-invent himself.
It's surely a possibility he plays 4-3-1-2 as well like in Empoli but I find it less likely unless we bring in another technical mid for a starting role.