Jonathan Calleri is relishing the chance to prove himself in the Premier League after completing a loan move from Deportivo Maldonado.
West Ham recently announced the Argentine attacker was set to make the move to east London and he has now joined his team-mates in training at Rush Green.
The 22-year-old received international clearance for his switch from the Uruguayan club on Tuesday and is in Slaven Bilic's squad for this week's Europa League play-off clash with Astra Giurgiu.
"I am very happy to have signed for West Ham," Calleri told the club's official website.
"This represents a fantastic new challenge for me and I am really looking forward to it. The Premier League is the best league in the world and so I am delighted to have this opportunity to play in such a prestigious league.
"It is a new chapter for me and so I am excited to get started here and to fit in as quickly as possible, so that I can be as useful as possible to my new teammates and manager.
"These are exciting times for me personally and I am motivated to adapt my game to this new environment. I am a player who always tries to work as hard as I can and to do my best for the team."
