Fiorentina's Supporters Association boycotted the opening 45 minutes of Sunday's home match with Bologna as a protest against the ownership.
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Vincenzo Montella returned for a second stint as Fiorentina coach after the Serie A club named him as their replacement for Stefano Pioli.
Fiorentina have not made a decision over a new manager following Stefano Pioli's resignation, sources have told ESPN FC.
Daniele Atzori was taken to hospital but did not survive, with reports saying "shameful" chants had been heard from some Fiorentina fans.
Federico Chiesa celebrated his 100th appearance for Fiorentina by inspiring them to come from two goals down to draw 3-3 at home to Atalanta.
Fiorentina's Jordan Veretout converted a penalty, awarded after a VAR review, in the 11th minute of stoppage time to to draw 3-3 with Inter Milan.
A controversial decision from a Video Assistant Referee (VAR) review proved crucial as Fiorentina overcame SPAL 4-1 in Serie A on Sunday at the Stad
Second-placed Napoli wasted half a dozen clearcut chances as they were held 0-0 at Fiorentina in Serie A on Saturday.
Federico Chiesa scored a hat trick as Fiorentina humiliated AS Roma 7-1 to reach the Coppa Italia semifinals on Wednesday.