The 2014–15 season was Chelsea Football Club's 101st competitive season, 25th consecutive season in the top flight of English football, 23rd consecutive season in the Premier League, and 109th year in existence as a football club. Chelsea also participated in the UEFA Champions League this season after qualified directly for the group stage by finishing third in the last season. The club secured its fourth Premier League title by beating Crystal Palace on 3 May 2015.

Midfielder and all-time top scorer Frank Lampard left the Blues after 13 trophy-laden years, having played 648 games and scoring 211 goals. During his Chelsea career, he won 13 trophies, including three Premier Leagues, four FA Cups, two League Cups, one Europa League and one Champions League.

Chelsea announced the signing of former Arsenal midfielder Cesc Fàbregas from Barcelona for £27 million. He was given the number 4 shirt vacated after the departure of David Luiz to Paris Saint-Germain on a five-year contract. David Luiz's transfer was completed just a day after the signing of Fàbregas and the Brazilian left the Blues having played 143 games and scoring 12 goals.

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