West Ham United are preparing an opening bid for Jørgen Strand Larsen as they battle relegation.
Manager Nuno Espírito Santo wants attacking reinforcements in January.
Wolverhampton Wanderers are believed to value the striker at around £40m.
The 25-year-old has scored three league goals this season for the bottom-placed side.
Strand Larsen impressed last year after arriving from Celta Vigo, scoring 14 goals.
That form attracted interest from Newcastle United in the summer.
West Ham sit 18th and see a new striker as vital to survival.
They may loan Niclas Füllkrug to AC Milan.
Nuno has also considered Ellis Simms and Haji Wright.
A move for Nathan Aké has failed, while talks continue for Adama Traoré.
