The Wales striker was was signed for a club record £3.5million from Norwich last summer but the diminutive forward has proved to be an expensive flop at Pride Park, scoring just once in a miserable campaign for the relegated Rams - a consolation in the 4-1 FA Cup drubbing by Preston.
Jewell said: "If there´s takers and they put offers on the table and Rob wants to go and it´s acceptable to the club, then there´s no harm done."
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