Sir Alex Ferguson told Manchester United TV in a recent interview: "The problem with doing a book is you have to bring in the elements and factors which in many ways either affected or determined your management decision-making.
"Because I've been at the club such a long time and you're building team after team after team, there are areas that you can't ignore.
"Why we sold certain players like David Beckham and Ruud van Nistelrooy. You can't ignore these things because these guys were big, big figures in Manchester United's career history."
Sir Alex Ferguson's eagerly awaited account of his life as Manchester United manager will be released later today.
Ferguson, who has been keen to keep the contents of the book a secret, will enlighten his audience about the most decorated career the game has ever known.
There have been no official leaks and no serialisation ahead of five sell-out Q+A evenings, that start in Manchester next Monday and take in visits to London, his home city of Glasgow, Aberdeen, where he first made an impact, and Dublin.
A road leading to Manchester United's Old Trafford stadium has been named after former manager Sir Alex Ferguson.
The Scottish manager, who retired in May after 26 years at the club, was also given the freedom of the Borough of Trafford.
Sir Alex Ferguson has revealed that he was approached by Roman Abramovich to manage Chelsea, and that he told him there was "no chance".
In an interview with American broadcaster PBS, he said: “They used an agent to approach me when Abramovich first took over the club.”
The veteran former Manchester United manager gave his vote of confidence to his successor David Moyes, insisting his former team is "in good hands".
He was also adamant that any rumours of him coming out of retirement were unfounded: “I made my decision. The timing was perfect. There is no way back for me now. I’ve got a new life."
The former Manchester United manager Sir Alex Ferguson has revealed some of his managerial secrets in his first major post-retirement interview to a US network to be broadcast tonight.
Sir Alex told the Charlie Rose Show on PBS that you should "never hold a grudge - it's very important" and that the best players are those who are courageous.
He admitted the worst part of a job was recognising a player was beyond his best.
And he showed an insight into his team talks: "I always say to them at half time, in the last 15 minutes - throw the kitchen sink!"
Sir Alex Ferguson has given his first interview to Manchester United's in-house TV station since he retired as the club's manager.
Sir Alex in an exclusive interview with #MUTV: "I've enjoyed my retirement. I left at the right time. It was a great period of my life."
He heralded the return to form of Wayne Rooney, a player he was said to have fallen out with at the end of last season:
Sir Alex on @waynerooney: "I thought Wayne was fantastic [on Tuesday]. He's got his energy back, his determination, his purpose to attack."
Former Manchester United manager Sir Alex Ferguson will receive the honorary freedom of Trafford borough.
Sir Alex will be formally honoured on October 14, the local council has announced.
A road near Old Trafford stadium will also be changed from Waters Reach to Sir Alex Ferguson Way in recognition of his achievements.
Sir Alex said he was "delighted to accept this honour".
Sir Alex Ferguson is set to cheer on fellow Scot Andy Murray at Wimbledon today.
The former Manchester United manager is in the royal box on centre court alongside England football manager Roy Hodgson and England Rugby Union coach Stuart Lancaster.
Murray will face Spain's Fernando Verdasco on centre court after the David Ferrer and Juan Martin del Potro match.
Manchester United said Sir Alex Ferguson's "incredible era ends with an extraordinary game" after the team drew 5-5 with West Bromwich Albion:
Manchester United manager Sir Alex Ferguson has appeared before the team's Premier League game against West Bromwich, in which will be his final match before retiring.