https://www.youtube.com/watch?v=VokG8nPoAmUCracking assist from Zielinski for the third goal. The first (hamsik) and third are good demos of the difference in how a fair number of teams in italy play their midfield line of 3 v what is more common in the english league. You had Hamsik, Zielinski and Jorginho tasked to battle and run the midfield, but none of them are aggressive ball winners. So how they are structured is as part of a disciplined, often unified line of players who move together defensively and take turns breaking forward into attack. The shape means a good opponent can exploit spaces behind and to the side of this line as the players are structured not to get involved in too many individual battles defensively, it makes that part of the pitch more reactive for Napoli, rather than a staggered, proactive shape. Thing is, with their planned pressing movements and sharp passing, a lot of teams end up overwhelmed anyway, but the tactical exploit is there, if you are good enough.
It's the shape (for that area of the pitch) Pogba played in for the majority of his time with Juve and it fit him well.