Maurizio Sarri has become the latest manager to leave Chelsea after he was named Juventus boss.
Sarri was the 13th managerial appointment made by owner Roman Abramovich since he took over the club in the summer of 2003, with Jose Mourinho and Guus Hiddink each having two spells.
Here, Press Association Sport looks at how those men have fared.
The Italian was at the helm when Abramovich arrived at Stamford Bridge. After heavy spending he led Chelsea to a second-placed finish in the Premier League and the Champions League semi-finals but faced persistent speculation about his job and was sacked at the end of the season.
The Portuguese established himself as a Chelsea hero, winning back-to-back league titles in his first two seasons, one FA Cup and two League Cups. His departure only a month into his fourth season by ‘mutual consent’ was unexpected.
A friend of Abramovich, Israeli Grant had been appointed technical director in the summer of 2007. He was controversially made manager after Mourinho’s departure and lasted only one season, which saw Chelsea finish second and lose in the Champions League final to Manchester United. He had the best win percentage of any of Abramovich’s managers.
Brazilian Scolari was the first World Cup-winning coach to manage in the Premier League but a poor run of form saw him sacked before the end of his first season.
Hiddink was appointed until the end of the season and combined his duties with his post as Russia manager. He lost only one match and won the FA Cup but could not be persuaded to stay.
The Italian enjoyed a dream first season, leading Chelsea to a first ever league and FA Cup double, with his side becoming the first to score more than 100 Premier League goals in one campaign. He was sacked hours after finishing second in his second campaign.
Hailed as the new Mourinho, Villas-Boas’ tenure at Stamford Bridge was not a happy one. After talk of a player revolt, he was sacked with Chelsea outside the Champions League places.
The former Chelsea midfielder had been Villas-Boas’ assistant and was made interim manager until the end of the season. FA Cup and Champions League wins earned him a permanent contract but the following season did not go nearly as well and he was sacked.
Benitez was the club’s latest interim manager, and unpopular with Chelsea fans because of his Liverpool past. The Spaniard won the Europa League and led the team to a third-place finish in the league.
‘The Special One’ returned to win a third Premier League title in 2014-15 as well as the League Cup but, after signing a new contract, a dismal start to the following season saw him leave the club for a second time.
Hiddink’s second caretaker spell could not match the impact of his first but he did manage to stabilise the club.
The Italian enjoyed a terrific debut season, with Chelsea dominating the Premier League and winning the title by seven points, but entered his second under a cloud after appearing to criticise the club’s transfer policy. The Blues finished fifth in the Premier League, missing out on a Champions League place, and even an FA Cup win could not save Conte.
The club won Sarri’s first five league games at the helm and were unbeaten in 12, but a relative dip early in the new year put their Champions League qualification in doubt and saw Sarri’s tactics questioned. They recovered to finish third, reached the League Cup final and won the Europa League but still find themselves seeking a new manager.