Mexico midfielder Edson Alvarez will have a medical today ahead of becoming West Ham's first signing of the summer.
Alvarez has bene the subject of interest from the Hammers for some time and an agreement has been reached with Ajax over a deal thought to be worth around £35m.
A central figure in the Mexico side that won the CONCACAF Gold Cup in the United States this summer, the 25-year-old is viewed as a replacement for Declan Rice, although his attributes are mainly as a defensive midfielder.
Providing there are no issues, formal confirmation of the transfer is expected on Wednesday.