Chelsea's sacking of manager Carlo Ancelotti was "damaging to the game", according to the head of the League Managers' Association Richard Bevan.
Ancelotti was dismissed after the 1-0 loss at Everton on Sunday, as Chelsea finished second in the Premier League.
"What Chelsea did was disrespectful to the manager, the fans, the club and the Premier League," Bevan told the BBC.
Bevan added that Blues owner Roman Abramovich "needs some new advisors" if he wants to win the Champions League.
"Mr Abramovich needs to look at the experience my members have got - something like 100,000 matches of experience," Bevan added on BBC Radio 5 live.
"If you want to win you have to look at building cultures, look at [Manchester United manager] Sir Alex Ferguson - he's managed 2,000 matches.
"It will be very interesting to see what the Chelsea fans think about it."
Ancelotti, who led AC Milan to Champions League glory in 2003 and 2007, was dismissed at Goodison Park after failing to win a trophy in his second season.
The 51-year-old Italian took over at Stamford Bridge in 2009, signing a three-year contract as he succeded interim boss Guus Hiddink.
He guided Chelsea to a Premier League and FA Cup Double in his first season but speculation about his future began to mount as Manchester United knocked Chelsea out of the Champions League and beat them to the Premier League title this time around.
And Ancelotti was given support by Ferguson on Monday night when the Scot collected the LMA manager of the year award.
"Carlo you are a fantastic man and you have showed great courage in coming to the dinner tonight, well done," said Ferguson.
Hiddink has been linked with a return to Chelsea but the Dutchman's agent says the 64-year-old is committed to his role as Turkey boss until at least October.
Dutchman Marco van Basten and Andre Villas-Boas, who led Porto to the Europa League title this season, are also possible contenders.