Bradley was carried off during the second half of the JPT defeat to Sheffield United and is expected to be out for months rather than weeks.
He had done well having been asked to fill in at centre half with the Millers already struggling due to a lack of bodies in that area.
Earlier today boss Andy Scott confirmed his search for loaness to strenghten the squad but insisted he won't be rushed into finding quality replacements.
Captain Ryan Cresswell is still unfit whilst Troy Brown is away on International duty, leaving Michael Raynes and a returning Johnny Mullins as the only available centre backs at the club.
Source: FOOTYMAD
