Ryan Giggs has recalled the experience of Sir Alex Ferguson leaving Manchester United.

Giggs has admitted his decision to leave United came as a "shock".

"He called me to tell me the evening before the club made the announcement. Although we talked a lot at Carrington it would be rare for his name to flash up on my phone out of hours and my first instinct in seeing it do so that evening was, 'Oh God, what have I done wrong?' Even at the age of 39," he writes in the Telegraph.

"When I finished talking to him that evening my overriding emotion was a great sadness. He had been part of my life for so long. It hit me at different stages over the next few months. When we went back for pre-season and he was not there, and then at Christmas. He was such a massive part of all our lives, organising, nurturing, driving us."