Billy Davies remains hopeful of persuading defender Kelvin Wilson to sign a new contract at Nottingham Forest.
Wilson's current deal expires at the end of the season and he has so far rejected the chance to extend his time at the City Ground.
The 25-year-old, who has made over 130 appearances since joining Forest from Preston in 2007, has been linked with a move to SPL giants Celtic, who reportedly had a bid of more than £1million turned down by the Championship outfit.
Forest boss Davies is aware that Wilson could leave the club as early as January, but will not give up his fight to convince the defender to stay.
"That is the risk we took," said Davies in the Nottingham Evening Post. "We knew that would be a possibility.
"We had a player who we'd bought for £300k, that we apparently had an offer of over £1m for.
"We turned down that offer and, when he did not sign that contract, we knew we were coming into this position in the January window.
"We will have to see what happens now with contract negotiations or whether he signs for another club on a free transfer.
"I do not want to see the player leave. It was important that we tied him to a new deal, but he turned the contract offer down.
"I don't know what the position is with his contract negotiations.
"All I know is that he is carrying a back injury and has had a reaction to that, which is keeping him out. With regards to any further negotiations I do not know."