Derby face huge bill for Man City crock Mills
Boss Paul Jewell said: "City have to look after their own affairs but, if it had been the other way round, I'd like to think we would have done something.
"We are bottom of the league but it seems it's every man for himself in the Premier League and that's disappointing.
"We now have to pay wages to a player who is not playing and that might stop us bringing in someone else on loan.
"His wages are quite high so we hoped that they might contribute. It's a bit disappointing the way some people do business."