Sir Bradley Wiggins nearly quit last year's Tour de France as he felt like "[Chris] Froome had stabbed him in the back," according to former Sky sports Team Director Sean Yates.

In his autobiography released today, Yates, who quit Sky 11 months ago, claims Wiggins was close to walking out of the Tour due to the aggressive manner in which team-mate Chris Froome rode during parts of last year's race.

"Wiggins wrote a text from his hotel room which read: "I think it would be better for everyone if I went home, " says Yates in his new book, titled It's All About The Bike.

Yates says that the team had a plan that Froome, who played second-fiddle throughout the Tour which Wiggins went on to win, would attack 500m from the end of the mountainous La Toussuire stage.

But Froome kept asking to go a lot earlier, which annoyed his fellow rider to the extent that he considered quitting the Tour after the 11th stage.

Yates and Sir Dave Brailsford, team principal at the time, then had to convince Wiggins to stay on, but he admitted that the eventual Tour winner felt betrayed by his team-mate's actions.

Yates claims that Brailsford failed to speak to Froome afterwards because he had a "dislike of confrontation."

The 53-year old also describes in his book how in the latter stages of his own professional cycling career, he forged a tight friendship with Lance Armstrong - something that has led to allegations that Yates himself was involved in doping during some part of his life.

It is for this reason that Yates left Team Sky last year, but the official announcement only came after a Sunday newspaper claimed he was leaving as part of an anti-doping cull. Yates strenuously denied ever being involved in doping during a career that saw him win a stage of the Tour, and he remains one of only six British riders to have led the famous race.

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