David Beckham has admitted he finds it impossible to hold a grudge against Sir Alex Ferguson, despite any criticism the former Manchester United manager levelled at him in his recently-released autobiography.

Ferguson claimed in his book ‘My Autobiography’ that Beckham’s football was affected by his celebrity lifestyle and that his work-rate dropped in his final year at United.

While some have taken umbrage at the revelations in Ferguson’s book – most notably former United captain Roy Keane – Beckham remains thankful to the 71-year-old Scot for allowing him to “live my dream”.

Indeed, Beckham’s only hint of bitterness was in a sarcastic claim that Ferguson’s comments had ruled him out of becoming the first manager of his Major League Soccer franchise, which is planned to be launched out of Miami.

“I’m not going to sit here and be negative about a man who gave me the chance to play for my boyhood team,” Beckham said while promoting his own book ‘David Beckham’ in a global book signing televised on Facebook.

“He gave me the chance to do that. He believed in me, he believed in the rest of the young lads that came through with us.

“The funny thing was, obviously I’m involved with the MLS and I’m involved in bringing in my own franchise to the league.

“Actually he was one of the first numbers I was going to call to be manager. Now I’m not so sure any more. I’m not so sure he’d accept.

“All joking aside I wouldn’t be negative about Sir Alex Ferguson.

“He was the man who gave me the chance to live my dream.”

Beckham sidestepped questions regarding recent reports that Miami had been set in stone as his preferred home for his MLS franchise, saying only that it was one of the cities he was considering.