Derby County are bracing themselves for a new bid from West Ham for midfielder Giles Barnes.
Rams boss Billy Davies values Barnes, 19, at £5million-plus and is desperate to keep the youngster at Pride Park to boost his club's chances of staying in the Premier League.
But Alan Curbishley needs to sign a replacement for Dyer, who broke a leg at Bristol Rovers on Tuesday night.
And the West Ham chief could weigh in with another cheeky bid for Barnes before the transfer window shuts at midnight tomorrow.