Napoli make particularly great use of third-man combinations when attacking. Insigne’s ability to cut inside and clip deft balls over defences (above) is a real asset in particular. From here, Callejon can run in behind from the right side, and slip first-time crosses across goal for the central forward – whether either Arkadiusz Milik or Dries Mertens – to tap home at the far post. Should Liverpool allow full-backs Trent Alexander-Arnold and Andy Robertson to maraud forward as usual, Napoli could make use of access to the wide areas in moments of transition.

Should Napoli continue in a 4-4-2, and build in a similar pattern to when using a front three, the key to attacking Liverpool will be to occupy Virgil van Dijk. Since joining Liverpool, the Dutch defender has added organisation to the back line, and is a commanding aerial presence. However, both goals scored by Paris Saint-Germain in their recent 3-2 defeat at Anfield involved taking van Dijk out of the equation. Edinson Cavani’s presence stopped him from clearing the danger for the first, while Neymar’s dribble pulled him away from eventual goalscorer Kylian Mbappe for the second. If Milik can occupy van Dijk, space might be left for the likes of Insigne, Mertens or Callejon to exploit.

Potential weaknesses

After seven games of the Serie A season, only four teams had conceded more goals than second-placed Napoli. While more than one of the 10 they have shipped have been little short of sensational – Fabio Quagliarella’s effort for Sampdoria is definitely worth a YouTube – their cover in midfield is certainly lacking organisation.