West Ham are reportedly putting the pressure on Bournemouth to sell striker Josh King during the January transfer window.
The Hammers have had an offer for the forward rejected by the Cherries which was believed to be in the region of £13m.
But the Irons are determined to land a striker this month after selling Sebastien Haller to Ajax for £20m a fortnight ago.
The Sun are now reporting that West Ham are set to launch an improved offer worth £16m in their bid to land the Norwegian.