Chris Froome reportedly refuses to give his backing to Team Sky boss Dave Brailsford

Team Sky's star rider also not one of the many riders to tweet their support for Brailsford

Team Sky's attempt to present a unified front in the face of growing controversy was dealt a blow on Tuesday as star rider Chris Froome reportedly declined to sign a joint statement supporting team manager Dave Brailsford.

On Monday night, a number of Team Sky riders - not including Froome - took to Twitter to give their support to Brailsford, with the team planning to put out a joint statement of support on Tuesday.

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