Alex Ferguson has warned Jose Mourinho that football was a high risk industry, but backed him to find a solution at misfiring Chelsea.
Speaking at an event in London, Ferguson suggested Mourinho was a good leader, but one struggling to come to grips with his first period of non-success, including a home defeat to lowly Bournemouth at the weekend, their eighth defeat from 15 Premier League games.
"If you look at his whole career there has been nothing but a rise all of the time so for the first time in his life he has had to deal with bad publicity, adversity and that is a challenge for him," Ferguson said.
"I watched the match on Saturday and they could have won by a few goals, but they lost," added Ferguson, who enjoyed great success during his 27-year spell as Manchester United manager.
"Football today is such a big financial industry, the television deal is (worth) billions, there is the press involvement, there is pressure from their own fans, it is a very high risk industry today," warned the Scot.
"The sort of average time a manager lasts now is a year throughout the whole country and that is not a big time."
Three Premier League sides, Liverpool, Aston Villa and Sunderland, have all changed managers so far this season and while Mourinho signed a new four-year deal in August, Chelsea owner Roman Abramovich is notoriously impatient with his managers.
Ferguson, however, feels Mourinho can dig deep and turn Chelsea's fortunes around despite their dreadful form.
"For Jose, I think all good leaders will eventually find a solution I think he will I think he will find a solution and I think you will get back to normal which is not looking great at the moment," he said.
"But I know the guy and I know the work he has done in football and I can't see it lasting long, I can't see it."
Ferguson believed that Roman Abromovich would be "foolish" to sack Mourinho.
"There is no point in sacking one of the best coaches of all time," said Ferguson.
"He has sacked so many coaches in the last 10 years. I am sure he has learned by it.
"He has to trust and have confidence that Jose can turn it round. In every country he has managed in he has won the big trophies.
"It would be foolish to sack him. It would be bad management."
Chelsea face Mourinho's former club Porto away on Wednesday for their final Champions League Group G tie.
With Dynamo Kiev expected to beat Maccabi Tel Aviv, a victory would see Chelsea advance as group winners and a draw in second.
Defeat, though, would see the Blues fall into the Europa League.
AFP
