West Ham have made an opening £25million bid for Ajax midfielder Edson Alvarez.
Talks were ongoing on Saturday as Ajax wanted £35m but could agree a compromise at £30m.
The 25-year-old is on holiday in his native Mexico but is ready to fly to London to complete a medical once a fee is agreed.
His representatives have already agreed a five year contract worth a reputed £148,000 a week before tax.
Alvarez, who has been the subject of interest from Chelsea and Borussia Dortmund, is poised to become David Moyes's first signing of the summer.