The 2007–08 season was Chelsea Football Club's 94th competitive season, 16th consecutive season in the Premier League, and 102nd year as a club. Manager José Mourinho left the club by mutual consent on 20 September 2007 following a disappointing 1–1 draw with Rosenborg and was replaced by the Israeli Avram Grant.

José Mário dos Santos Mourinho Félix GOIH, is a Portuguese professional football manager and former player who was most recently head coach of Italian Serie A club Roma. Dubbed "The Special One" by the British media, Mourinho is one of the most decorated managers ever and is widely considered to be among the greatest managers of all time.