Sir Alex has announced his retirement after 27 years as Manchester United manager. He went out in a blaze of glory, having won the Premier League 13 times with Manchester United. He is without doubt considered the greatest manager in the history of British football. The last quarter of a century has seen major changes at Manchester United. All this time there was the quality of play in the Premier League and United's success on the international stage, including winning the Champions League in 2008. Sir Alex started working for Manchester United when it was an ordinary football club and ended up working in a successful business project. This success is largely due to his vision, energy and ability in building the team both on and off the field. He was a phenomenal human trainer who was fortunate to work with world-class stars. His relationship with Cristiano Ronaldo, for example, was wonderful, and David Beckham called Sir Alex a father figure. Over the last four years of his career, Sir Alex has been reflecting and recording the highlights of his extraordinary career. In his new book, he will tell his amazing story, starting from the very beginning of his life.