Nottingham Forest have set their price for midfielder Matty Cash.
The Sun says West Ham have been told that they must pay £18m if they are to sign Cash this month.
Cash is highly sought after, with AC Milan and Everton also interested in signing the 22-year-old.
The Hammers are willing to pay £12m for Cash but Forest are holding out for a higher fee.
Cash has produced some excellent performances for Forest this season, featuring in all but one of their Championship games.