Former England coach Fabio Capello claims Sir Alex Ferguson told him he decided to retire as Manchester United manager due to stress and because, at the age of 71, he still wants to travel the world, reports The Guardian. "I called him yesterday and he told me he has decided to go now because there is too much stress nowadays. Always having to win something is very challenging, and he told me he wanted to go around the world with his wife.

"His secret is amazing. To have that strength and ability to change things and improve every year, and always have the same desire to win."

The Italian was taken by surprise at the announcement. "I met him a few months ago and he told me he would carry on," he said. "So the news of his retirement surprised me".