Napoli likely to go 442 today with Insigne and Mertens upfront Allan Fabian ruiz in the midfield
Knowing Emery and his love for a three men backline, I'd probably opt for a midfield three of Torreira, Xhaka and Özil with Auba and Laca both in front to have more numbers in central midfield despite three at the back. Wingbacks can provide width against their 442. Although it might be too easy to shut the wings down if they got numerical superiority there.