Mark Cavendish has said that Team Sky broke a promise to help him defend his Tour de France green jersey.
The 2011 world champion acted as a support rider to Bradley Wiggins in the 2012 Tour.
Cavendish told The Telegraph: "Sky should have taken both jerseys. We could have done that without any risk or detriment to the yellow jersey. It's frustrating.
"It was [when Juan Antonio Flecha was dropped from the Tour de France squad], on the eve of the Tour, that I realised the promise I had signed to Sky on wasn't really a promise.
"I was a back-up rider. At the end of the day we weren't going for the two jerseys at all."
The sprint specialist is moving to Omega Pharma-Quickstep next year after just one season at Team Sky.
