Sinisa Mihajlovic was sacked as coach of Serie A side Fiorentina on Monday and replaced by Delio Rossi, the club announced.
Mihajlovic, 42, had come in for some heavy criticism already this season and Sunday's 1-0 defeat by Chievo - which left them 11th in the table - proved the final straw for the club board.
The Serbian - who had previously coached Bologna and Catania in Serie A after a distinguished playing career which saw him win the European Cup with Red Star Belgrade in 1991 - had been in charge since the beginning of last season when Cesare Prandelli left to coach the national side.
Rossi is best known for two spells coaching Palermo in the past two seasons, guiding then on both occasions to a Europa League place.
However, the 51-year-old has fallen foul of the so called 'coach eater' Palermo owner Maurizio Zamparini, who refused to renew his contract in the summer and only last season sacked him after a 7-0 humbling by Udinese before rehiring him a month later.