Napoli forward Alisson de Almeida Santos sustained an injury during the club's Champions League defeat against Arsenal on September 10, and the club has since confirmed the extent of the damage alongside a projected return timeline — leaving Massimiliano Allegri's side without a player they can ill afford to lose, however modest his contributions have been so far this season.
The timing sharpens an already uncomfortable picture. Napoli sit 12th in Serie A after three matches, with one win, two defeats, and three points to show for a campaign that has produced five goals and conceded five. Alisson himself has not contributed directly to any of those goals: across his three league appearances, he carries zero goals and zero assists, with an average match rating of 6.33. That is not a catastrophic return at this stage of a season, but it is not the kind of form that gives a manager confidence when he is weighing up squad options around an injury absence.
The deeper concern is structural. An AI overall rating of 61 out of 100, with a potential ceiling of 72, marks Alisson as a player still very much in development — a 23-year-old who has not yet found the consistency to translate his ceiling into regular output. Three matches without a goal or assist, combined with a rating that sits just above the threshold of adequacy, suggest a forward who is still searching for his footing in Allegri's system rather than one who has been unlucky to miss the scoresheet.
Allegri, for his part, has spoken publicly about the Arsenal defeat in terms of tactical respect — acknowledging that Arsenal's defensive discipline was unusual for an English side. That framing points to a coach processing a difficult result rather than one who has found his best eleven. With Alisson now unavailable and goalkeeper Alex Meret also confirmed injured, Napoli's squad depth is being tested early.
The absence removes one option from Allegri's attacking rotation at a moment when Napoli need goals more than they need patience. Whether Alisson returns to find a system that suits him, or comes back into a side that has moved on without him, depends on how quickly the club can arrest a start that already looks fragile. For now, the forward's season is on hold before it has properly begun.