Fiorentina midfielder Edoardo Bove has been taken to hospital after collapsing on the pitch during his side's Serie A match against Inter Milan on Sunday.
The match was suspended after the incident in the 16th minute before later being abandoned.
The 22-year-old suddenly fell to the ground, causing a stoppage in play with both sets of players immediately signalling for the medical staff to enter the field before forming a protective ring around him.
Bove was taken away on a stretcher and put into a waiting ambulance after the referee asked both set of players to leave the pitch.
The midfielder joined Fiorentina on a season-long loan from Roma in August, with a view to make the deal permanent.
His first goal for La Viola came in October against his parent club.
The Italian has played for his country all the way up to under-21 level, but is yet to earn a senior cap.
Fiorentina are third in Serie A, level on points with Inter.
Giuseppe Marotta, Inter president said to Sky Italia: "Inter and the entire football world express their closeness to Bove's family and Fiorentina.
"The decision to postpone the match was spontaneous on everyone's part, we are a community, all the players and even the referee were emotionally involved. We hope it is nothing serious."
Bove's team-mate David de Gea, the former Manchester United goalkeeper, posted on X, external: "God please." The message was accompanied with a prayer hands emoji.
His parent club, Roma, also added on X, external: "One of us, we are all with you."
Serie A's official X account, external said: "Forza Edoardo. We're all with you."