 After three seasons, the last of which saw Everton return their worst home record in the club's 138-year history, Martínez was sacked in May 2016 and replaced by Ronald Koeman a month later.Koeman was sacked in October 2017 after 16 months in the job following a 5–2 defeat to Arsenal that had dropped the club into the relegation zone.Sam Allardyce was named as Koeman's permanent replacement in November 2017.