As he prepares for his fight against Rocky Fielding in December, Canelo Alvarez says that Floyd Mayweather 'doesn't want to risk a second fight'Subscribe to ESPN UK: http://bit.ly/1oGUzVAFollow ESPN UK across multiple platforms:https://en-gb.facebook.com/ESPNUKhttps://twitter.com/ESPNUKhttp://www.espn.co.uk/