Palpable discord: A timeline of Jose Mourinho's forgettable season at Chelsea
Former Chelsea manager Jose Mourinho will return to Stamford Bridge as Manchester United boss in Sunday's Premier League match.
The self-proclaimed Special One has managed in opposition at Stamford Bridge before, in 2010 with Inter Milan, but endured a woeful third season of his second spell last term, culminating in his departure in December 2015.
Here, Press Association Sport looks at the 53-year-old's troubled and controversial Chelsea campaign, on and off the pitch.
August 8, 2015: Mourinho criticises Chelsea first-team doctor Eva Carneiro and physiotherapist Jon Fearn for naivety after they ran on to the field to treat Eden Hazard in the opening-day draw with Swansea. Mourinho is cleared by the Football Association of abusing Carneiro, who then subsequently leaves Chelsea.
August 16: Chelsea lose 3-0 away to Manchester City, with Mourinho substituting captain John Terry at half-time.
August 29: Mourinho's 100th Premier League home match results in his just second loss at Stamford Bridge in the competition as his side go down 2-1 to Crystal Palace.
September 12: The Blues lose again as they are beaten 3-1 at Everton, with Steven Naismith scoring a hat-trick.
September 19: Diego Costa is banned retrospectively for a running feud with Arsenal defenders Laurent Koscielny and Gabriel in Chelsea's 2-0 win. Arsene Wenger avoids censure afterwards for calling referee Mike Dean "weak and naive". Mourinho turns his frustrations to Wenger and the FA.
September 29: Chelsea lose 2-1 to Mourinho's old club Porto in the Champions League.
October 3: Following a fourth league defeat, 3-1 to Southampton, Mourinho questions whether he will be sacked and subsequently receives the first vote of confidence in a manager in the 12 years of Roman Abramovich's ownership. He is, though, hit with a £50,000 fine and suspended one-match stadium ban for comments after the loss about referee Robert Madley, which, an independent panel judges, alleged bias.
October 15: The Portuguese maintains his attack on the FA, calls his fine a "disgrace" and says: "I'm happy that I don't have an electronic tag."
October 17: Mourinho rounds on star player Hazard after dropping him to the bench for the 2-0 win over Aston Villa and demands the Belgian improve his defensive work rate.
October 24: Chelsea lose again, 2-1 at West Ham, losing Nemanja Matic to a first-half red card and also having assistant first-team coach Silvino Louro sent to the stands. Mourinho does not emerge on the touchline for the second half, having also been sent off.
October 26: Mourinho charged with misconduct over his behaviour at West Ham.
October 27: Holders Chelsea are knocked out of the Capital One Cup after losing their fourth-round tie to Stoke on penalties.
October 31: Chelsea suffer yet another defeat as Liverpool are 3-1 winners at Stamford Bridge. The club's position on his future, publicly at least, is unchanged from the vote of confidence at the start of the month.
November 2: Press Association Sport learn legal papers will be served on Mourinho as part of separate but connected claims against him and against the club by Carneiro.
November 2: Mourinho is given a one-match stadium suspension with immediate effect and fined £40,000 after admitting an FA charge of misconduct over his behaviour at West Ham.
November 6: The FA releases its written reasons for Mourinho's ban, saying he called referee Jon Moss "f****** weak".
November 7: With Mourinho absent from the game due to his ban, Chelsea lose 1-0 at Stoke - the club's seventh league loss of the campaign.
November 23: It is announced that Chelsea made a loss of £23.1million in their Premier League-winning season.
November 29: Costa is dropped to the substitutes' bench for the 0-0 draw at Tottenham and throws his bib in Mourinho's direction when it becomes apparent he would not feature.
December 5: Blues go down 1-0 at home to Eddie Howe's Bournemouth. Substitute Glenn Murray was on the pitch for one minute 39 seconds before netting an 82nd-minute winner.
December 14: Chelsea beaten 2-1 at Leicester, putting the Foxes back top of the Premier League and leaving Mourinho's men one point above the relegation zone after 16 matches - Chelsea's worst start to a season since 1978, when they went on to be relegated. Mourinho says after the game that his work was "betrayed" by his players. He admits all top-four hopes are "gone" and says he needs pride from his players.
December 17 - Chelsea announce they have parted company with Mourinho by mutual consent. Technical director Michael Emenalo says there was "a palpable discord between manager and players".
January 23, 2016 - The Independent on Sunday reports Mourinho has made a pitch to Manchester United about the job. It is later disputed by his agent, Jorge Mendes.
May 27 - Appointed manager of Manchester United.
June 7 - Mourinho appears on the second day of the employment tribunal with Carneiro in Croydon. Carneiro claimed constructive dismissal against Chelsea and had a separate, but connected, personal legal action against Mourinho for alleged victimisation and discrimination. The case is settled and Chelsea apologise, but there is no apology from Mourinho.