West Ham are aiming to complete a deal worth up to £30 million ($38m) including add-ons for Brentford winger Said Benrahma after he returns from international duty with Algeria.
The 25-year-old has attracted interest from Chelsea and Crystal Palace among others but the two London clubs stopped short of making a bid, with David Moyes' side taking the initiative while the EFL transfer window is still open.
Brentford have long indicated a £30m asking price which the Hammers, as first reported by the Guardian, are willing to reach as long as they can pay through performance-related bonuses and instalments.