Bad news for Chelsea fans - manager Jose Mourinho has left Stamford Bridge in a shock agreement with the club.
The news comes just a day after the Blues' disappointing 1-1 draw with Rosenborg in the Champions League.
Mourinho's won six trophies in his three years at Chelsea, but this season they haven't got off to a great start and are fifth in the Premier League.
Chelsea's former director of football Avram Grant has been named as Mourinho's replacement.
Steve Clarke is staying on as assistant manager at the club.
Mourinho joined Chelsea in 2004 and led them to the Premiership title in each of his first two seasons.
Avram Grant is expected to replace Mourinho as Chelsea's manager
The Blues came second to Manchester United last year, but won the FA Cup and Carling Cup.
Mourinho is thought to have texted his top players, like captain John Terry and Frank Lampard, to let them know he was leaving.
No-one knows for sure what's led to his departure, but there have been reports in the past of arguments between him and Chelsea boss Roman Abramovich.
Lots of people had thought he was going to quit in the summer - in the middle of his five-year contract - but he said he'd stay for as long as he received "real support" from the club.