Argentinian forward Zarate arrived in Italy on Saturday in a complex agreement which involves the 21-year-old joining the club initially on a loan deal reportedly worth 3million euros.

Lazio will then be able to buy half the rights to the player before next May for 5.5million, and the remaining half a year later for 8.5million.

The forward, who spent half of last season on loan at Birmingham City, will be presented at a press conference on Monday with his compatriot Carrizo.

The 24-year-old goalkeeper was meant to join the Serie A side from River Plate last term, but the deal fell through due to problems over documentation.