"Manuel Lanzini suffered, in today's morning training, the rupture of the anterior cruciate ligament of his right knee," the national side announced on Twitter on Friday.
The World Cup starts in Russia next week and the West Ham United player's absence will be a blow for manager Jorge Sampaoli.
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Argentina, who lost in the World Cup final four years ago but only qualified for this year’s tournament by winning their final qualifying match, have been drawn in Group D alongside Iceland, Croatia and Nigeria.
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