Fiorentina's match with Inter Milan was stopped on Sunday after midfielder Edoardo Bove suddenly collapsed to the ground.
Bove was rushed away in an ambulance as players and fans looked on in horror following his sudden fall with 16 minutes on the clock.
Sky Sport reports that the 22-year-old, on loan at Fiorentina from Roma, dropped to the turf while bending down to take off his boot.
The players and officials then left the field with the match, which was goalless, likely to be called off and rescheduled for a later date.