The summer transfer window has shut on a Fiorentina squad that looks almost unrecognisable from the one that opened the Serie A 2026-27 season, and for Fiorentina forward Franco Mastantuono, the arithmetic of competition has shifted sharply. Pedro Goncalves arrived from Sporting CP, Wilfried Gnonto from Leeds United, Beto from Everton in an €18m deal, and Alieu Njie on loan from Torino with an obligation to buy — four attacking reinforcements in the final days of the window, each one narrowing the space available to a 19-year-old still searching for his first contribution of the campaign.
The urgency behind that recruitment is not hard to read. Fabio Grosso's Fiorentina sit bottom of Serie A after two matches, with seven goals conceded and none scored. Two defeats, zero points: the club marked its centenary with a loss to Frosinone, and the table has not improved since. In that context, the arrivals are less a vote of ambition than an admission that what Grosso had was not working.
Mastantuono carries an average rating of 6.30 across his two Serie A appearances this season — functional, not decisive. His AI overall of 67 out of 100, with a potential of 82, frames him precisely as he is: a player whose ceiling is considerably higher than his current output, but one who has not yet found the form or the environment to close that gap. The potential figure is significant. It suggests the data sees something in Mastantuono that two blank scoresheets do not yet reflect.
The question Grosso now faces is whether a 19-year-old in a side that has shipped seven goals in two outings can develop under that kind of pressure, or whether the new arrivals will simply push him further from the starting eleven at the moment he most needs minutes. Gnonto's departure from Leeds and Goncalves's pedigree at Sporting CP represent a different order of proven quality. Beto offers a physical presence up front that Fiorentina have conspicuously lacked. Njie adds further depth.
None of that makes Mastantuono redundant. At 19, with a potential ceiling that the data rates well above his current standing, he is not a player to be written off after two difficult matches in a team that has collectively failed to function. But the margin for passive development has narrowed. Grosso needs results immediately; Mastantuono needs the pitch time that results-driven selection may not readily offer him.
The window is closed. The squad is assembled. What happens next will tell us whether Fiorentina's reinforcements stabilise a sinking ship — and whether Mastantuono finds a way to matter inside it.