After years of speculation, Jose Mourinho has confirmed that he agreed to replace Sir Alex Ferguson at Manchester United in 2013, before changing his mind and re-joining Chelsea instead.

“When I left Real Madrid, I signed to go to Manchester United after Sir Alex,” the 63-year-old coach – now back at Real for a second spell – said in a new Netflix documentary series about his career.

“He was offered the job, yes,” confirmed Ferguson, who won 13 Premier League titles over 26 years at Old Trafford before retiring in 2013.

“I sat him down and explained the situation,” he added: “As far as I was concerned, he was accepting. And then, within hours, it changed.”

What changed was that Mourinho felt he could not turn down a return to Chelsea, where he had won consecutive Premier League titles in 2005 and 2006.

“One night, he phoned me and he was crying and he says, ‘Alex, I can’t take it. I’ve given my word to Chelsea and I’m not going to break my word’,” said the former United boss.

“The reason he gave to me, I could understand, but I was disappointed.”

Mourinho said he was “very flattered” to be offered the job of replacing Ferguson “because Manchester United has an incredible appeal”.

“But one thing is love for football, another thing is love for a certain club,” he explained.

“I think this is more powerful than love for football and fundamentally, after Real Madrid, I needed to feel that I’m loved.

“For me to lose the chance to be the coach to succeed Sir Alex Ferguson was dramatic, but I don’t regret (it) because it was a decision that I made with my heart.”

After returning to Stamford Bridge in 2013, Mourinho went on to win his third Premier League title as well as the League Cup.

In May 2016, he got a second chance to take over at United, succeeding Louis van Gaal.

Over a two-and-a-half year spell at Old Trafford, Mourinho won League Cup and Europa League titles before being sacked in December 2018 following a slump in results.

He returned to another of his old clubs, Real Madrid, in May this year. Mourinho’s last spell there ended in acrimony as he fell out with club captain Iker Casillas and other players.

On the eve of his Real reunion, the combative manager and former Spain goalkeeper Casillas spoke candidly about the reasons behind those differences.

Mourinho also spoke about difficulties he has faced with former Chelsea owner Roman Abramovich, who hired him twice and sacked him both times.