The Russian dancer "feels stitched up" by Strictly producers and doesn't expect to last "long" on the ballroom contest, according to a Daily Star source.
The Latin specialist won the 2010 competition with now-fiancée Kara Tointon and reached the semi-final with Holly Valance last year.
Regarding the decision to partner him with 55-year-old former This Morning presenter Britton, an insider claimed: "He feels stitched up. He knows he won't be in for long."
Fellow professional Anton Du Beke is also allegedly unhappy over his pairing with American model Jerry Hall due to her being "high maintenance".
Strictly Come Dancing returns on October 5, where seven celebrities will be performing for the first time with their new partners.
Watch Fern Britton discuss Strictly Come Dancing below:
Photo gallery - Strictly Come Dancing launch show: