Gregory cannot even sign former Middlesbrough midfielder Robbie Mustoe who has been training with the Rams and is a free agent.

Derby have been working with a firm of accountants on restructuring their finances following relegation with the club's overall debt in excess of �30m.

Gregory knows he has to sell at least one of his players within the next six weeks but he insists no-one will be leaving for knockdown prices.

Gregory has admitted he may have to sell goalkeeper Mart Poom, who is a target for Everton, but not for less than �6m.

He also said he was not fully aware of the club's financial situation when he took on the job of manager.

"I've inherited a problem - we just have to roll our sleeves up and get on with it," said the Derby boss.

"I'm just going to have to face these problems on a daily basis which means doing everything we can with the group of players I've got.

"But I know, without any question, that I have to sell a player within the next six weeks.

"But I'm not going to be press-ganged into it - I'm not going to be pushed into a corner where we end up giving away one of our better players for less money than he's worth."