West Ham are set to complete the £30m signing of Brentford forward Said Benrahma before Friday's transfer deadline.
It is understood the Hammers have agreed to pay £25m up front, with another £5m in add-ons.
The 25-year-old flew back from international duty with Algeria on Wednesday and is set to replace Felipe Anderson in David Moyes' squad.
It is anticipated he will have a medical before the end of Thursday.
There had been talk of a dispute between Benrahma, who scored 17 goals in 43 Championship appearances last season, and Brentford.
However, it is acknowledged it is not in the interests of any party for the deal to be scrapped given the player's desire to play in the Premier League.