LONDON — West Ham has signed Argentine striker Jonathan Calleri on a season-long loan, soon after he competed for his country in the football tournament at the Rio Olympics.

Calleri, who was the top scorer in last year's Copa Libertadores with Sao Paulo, joins from Uruguayan club Deportivo Maldonado.

West Ham said Tuesday he is in the squad for the Europa League playoff against Astra Giurgiu.

The 22-year-old Calleri scored for Argentina at the Rio Games. He scored 39 goals in 90 appearances in club football over the last two seasons.

Burnley broke the club's transfer record to sign Belgium midfielder Steven Defour from Anderlecht for a reported 7 million pounds ($9 million). Defour has won league titles in Belgium with Standard Liege and in Portugal with Porto.