Frank Lampard returns to Chelsea and will be the ferryman until the end of the season.
Lampard who succeeds Bruno Saltor previously coached at Stamford Bridge until January 2021, and had been replaced in the previous management by Thomas Tuchel who went on to win the Champions League that season.
For next year, Chelsea are betting on Julian Nagelsmann who has just been sacked by Bayern Munich to make room for Tuchel.
Lampard, who left the Everton bench last January.
Lampard will make his debut against Wolverhampton next Saturday.