West Ham are pursuing a summer deal for Mexican winger Jurgen Damm, according to The Sun.
The report claims that the Hammers have already lodged a £4m bid for the 24-year-old, who plays for Liga MX side Tigres.
Damm, who has a reputation for his tremendous pace, had an unsuccessful trial with Manchester United four years ago.
The Mexico international scored five goals in 34 games for his side last season.