Sheffield Wednesday accept they face losing George Hirst.
The Daily Mail says Wednesday are braced for offers when the transfer market opens in January.
They rejected a £2 million offer from Leicester in August and there has been interest from Leeds and Everton in the teenage striker who is out of contract at the end of the season.
Owls chairman Dejphon Chansiri broke his silence last week on the subject with a message to supporters.
"We have tried our best and are disappointed but it seems there is little more we can do to keep George at Sheffield Wednesday," said Chansiri. "Our offer broke our current salary structure for the development squad on a level never previously matched."