Former Chelsea boss Guus Hiddink has told owner Roman Abramovich to stop changing managers so frequently.
Hiddink, who had a spell as caretaker boss in 2009, is one of seven coaches hired by the Russian billionaire since he bought Chelsea in 2003.
However, he feels it is time Chelsea followed Manchester United's lead and give 33-year-old new manager Andre Villas-Boas time to establish himself.
Hiddink said: "I told Roman that and I think they are convinced as well now."
Former Porto boss Villa-Boas succeeded Carlo Ancelotti as Chelsea manager in June.
Ancelloti, who guided the Blues to the Premier League and FA Cup double in 2010, was sacked after he ended his second season at the west London club without a trophy.
Turkey coach Hiddink added: "Look at the record of Carlo - he won the double. Of course, if you win the double and you go it is harsh.
"Carlo did well for the last two years but, hopefully, this decision will bring success as well.
"It is a very young age for Villas-Boas to be Chelsea's manager, but he has already proved at Porto he is good.
"It depends on the quality of the manager and how he deals with senior players. Age does not have to mean the players consider him as a brother.
"If they feel he is straightforward and has integrity, he will be fine."
Villas-Boas succeeds Ancelotti, Hiddink, Ray Wilkins, Luiz Felipe Scolari, Avram Grant and Jose Mourinho in the Stamford Bridge hotseat.
Claudio Ranieri departed a year after Abramovich's arrival.