Derby County sanctioned the departure of Kamil Jozwiak earlier this month.
The Polish winger was allowed to leave Pride Park, and headed for the United States after MLS side Charlotte agreed a deal worth around £2million.
It was seen as a vital boost to the Rams' coffers given their worrying financial situation. But a fresh report now claims that Derby still actually owe a seven-figure fee to the club they originally purchased Jozwiak from.
