The midfielder has been told he is not part of Gary Megson's plans at the City Ground and had been playing regularly during recent weeks for Rotherham.
He was taken to Millmoor by former Forest caretaker boss Mick Harford who was sacked last weekend.
Also facing an uncertain future is former Reds favourite Steve Stone. The ex-England international has not played for Leeds since joining them in the summer and there are fears that the 34-year-old may not play again due to problems with an achilles injury.