West Ham are in talks with Eintracht Frankfurt over the transfer of striker Sebastien Haller, according to Sky sources.
The Bundesliga club are thought to want at least £40m to sell the 25-year-old after the departure of Luka Jovic to Real Madrid for £54m.
Sky Sports News understands both sides are increasingly hopeful a deal can be done, with the player's representatives remaining ready to fly to London to discuss terms once the clubs reach an agreement.
The Frenchman had an impressive season in Germany - scoring 15 goals in the Bundesliga and five more in the Europa League - as Frankfurt made it to the semi-finals, where they lost to eventual champions Chelsea.
Haller originally joined the German club from Utrecht for £6m after breaking through the youth ranks at French club Auxerre.
The Hammers, meanwhile, saw their search for a striker take a hitch after the club was not able to agree a deal for the transfer of Celta Vigo frontman Maxi Gomez.
The east London club are on the lookout for a forward after selling Marko Arnautovic to Shanghai SIPG for £22.4m, Lucas Perez to Alaves for £2m and also releasing Andy Carroll.
On Thursday, Sky in Italy reported West Ham made a formal bid for Juventus striker Gonzalo Higuain, enquiring about the opportunity to sign the former Chelsea striker on loan with option to buy.
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