West Ham are on the verge of completing a £40m deal to bring in Wolves captain Max Kilman.
The Hammers had a £25m bid turned down for the defender last month.
However, it appears certain their persistence will pay off with Wolves set to accept the latest offer, which would allow Kilman to complete his move.
It will reunite him with former Wolves boss Julen Lopetegui, who has replaced David Moyes at the London Stadium.
West Ham technical director Tim Steidten said earlier this week he anticipated it would be a "busy" summer for the club.
Crucially, he also confirmed West Ham had no profit and sustainability issues thanks to the £105m sale of Declan Rice last summer.
Kilman, 27, joined Wolves in 2018 from Maidenhead United.
The centre-back had to wait until May 2019 before making his debut for the club against Fulham.
Maidenhead United will get 10% of the transfer fee - which amounts to about £4m - after inserting a sell-on clause when selling Kilman to Wolves.
The clause was initially 20% but it was renegotiated in the interests of all three clubs to allow the deal to go through.