From Ranieri's Wiki page
Ranieri resigned before he could be sacked by the Atlético chairman
he was finally relieved of his coaching duties at Chelsea
He was sacked on 25 February 2005 after Valencia were eliminated from the UEFACup
Parma announced Ranieri would not be the club's manager for the following season
Speculation ended when, after having an emergency board meeting on 18 May 2009, the board sacked Ranieri (this was Juventus)
Ranieri resigned as manager on 20 February 2011, after a poor run of results.(this was Roma)
after a run of just two wins in their last 13 games and eventual elimination by Marseille in the Champions League, Ranieri was dismissed (this was Inter Milan)
On 20 May 2014, his contract as Monaco manager was not renewed
He was sacked on 15 November 2014, the day after a
UEFA Euro 2016 qualifying defeat at home against the
Faroe Islands (Greece national Manager)