West Ham have made a £10million offer to Brentford for striker Scott Hogan which has been rejected.
Sportsmail revealed West Ham's interest last month but the Championship side want closer to £15m for the 24-year-old with a 30 per cent sell-on due to his former club Rochdale.
Watford, Reading, Norwich and Aston Villa have also enquired about Hogan who has scored 14 goals this season. Red Bull Leipzig have also checked on his progress.
The former Rochdale striker is the Championship's third highest goalscorer with 14 goals in 25 appearances.