Serie A matchday 5 brings Fiorentina against Napoli on 20 September 2026, with both sides needing points for very different reasons. Fiorentina sit 16th after four games with just three points and a goal difference of minus six, while Napoli occupy 10th with six. The home side needs a result to arrest a slide that has left them without a win under new management, whereas Napoli, fresh off a narrow 1-0 win over Bologna, are looking to consolidate after a run that included a Champions League defeat to Arsenal.
Fiorentina's last five reads W-W-L-L-L across all competitions. A 4-2 win over Venezia featuring a hat-trick from Franco Mastantuono showed he can carry them when service is consistent but defeats to Roma, Frosinone and Torino have exposed a defence that has conceded 11 goals in four league outings. Napoli's sequence is W-L-L-L-W, bookended by a 2-3 loss to Inter and setbacks against Como and Arsenal before the 1-0 win over Bologna on 13 September.
Fiorentina are without Fabiano Parisi, still recovering from an ACL injury, forcing them to deploy a makeshift option at left back. Napoli are short four players: Alex Meret and Alessandro Buongiorno are both out through injury, Scott McTominay is recovering from a heart procedure and Luca Marianucci is also unavailable. Without Meret and Buongiorno, Napoli's backline faces added pressure, stripping Allegri of his first choice keeper and his most reliable aerial defender in one go, while McTominay's absence removes the player Allegri used to press high and win the ball back quickly in the middle third.
Fiorentina line up in a 4-3-3 built around the route to Mastantuono, with Nicolo Fagioli anchoring midfield with progressive passing and David de Gea behind a defensive line that has looked unreliable. Without Parisi, the left side becomes an obvious target for Napoli's quick switches of play and while Vanoli will probably press high to get the ball to Mastantuono early, Napoli will punish them on the counter when possession is lost. Napoli operate a similar 4-3-3 under Allegri but with different priorities, control and set piece organisation are the priority, with Kevin De Bruyne supplying creativity from midfield, Rasmus Hojlund leading the attack and Stanislav Lobotka anchoring in front of the defence fresh off his goal against Bologna. Allegri will likely favour a compact mid block, absorbing Fiorentina's pressure before releasing De Bruyne to run at a retreating defence, with Lobotka compensating for the losses of Buongiorno and Meret.
The match ups that matter most are Mastantuono against Napoli's midfield pairing of De Bruyne and Lobotka, who will want to cut off his service and Hojlund against Fiorentina's centre backs who have conceded 11 in four league games. Allegri is pushed toward a more pragmatic shape by the absences, though it suits his instincts anyway, while Fiorentina lose the natural outlet down the left by deploying a makeshift option at left back. Napoli's set piece organisation is strong and, while losing Buongiorno creates some aerial uncertainty, careful zonal marking can still produce overloads, whereas Fiorentina's defensive record on set pieces has been poor and they will look to Mastantuono and Fagioli from those situations.
Napoli have won the last four Serie A meetings between these sides and are unbeaten in their last eight visits to Fiorentina's ground, scoring two or more goals in seven of those encounters.
Lobotka and De Bruyne give Napoli a midfield axis Fiorentina cannot currently match and Allegri's response to absences is typically to narrow the shape and concede possession, which suits this matchup anyway. Fiorentina will likely get on the scoresheet through Mastantuono, whether from a counter or a set piece but the defensive vulnerabilities exposed over recent weeks and the loss of Parisi leave them exposed every time De Bruyne receives in midfield with Fiorentina's full backs pushed up. Hojlund's movement behind the line and De Bruyne's range should be enough to find the net at least twice against a defence that has conceded 11 in four games. Napoli to win 2-1.
Ryan Baldi
Football Writer
Ryan Baldi is a professional football writer with years of experience and has been featured by respected outlets such as the BBC, The Guardian, Sky Sports, DAZN, FourFourTwo, ESPN, Yahoo Sport and Football365. He has also written several books including Arsène Who?.
