John Brayford has dropped to League One and joined Sheffield United on loan until the end of the season.
Brayford, signed by Malky Mackay last summer, has barely been seen in a City shirt this season and his absence has always remained a mystery.
Weve never found out just why Mackay didn't play one of his summer signings after the player left Derby as a first choice full back.
Delighted Blades boss Nigel Clough said: “This is a major coup for us because, believe me, John could have easily moved to teams in the division above.”