Arsenal have confirmed Lucas Torreira suffered a fractured ankle in their 2-0 win at Portsmouth in the FA Cup on Monday.
The Gunners broke the news on their official website on Thursday but did not offer a time frame for his expected recovery before further specialist assessment can be made.
Torreira had to be stretchered off early on at Fratton Park after a challenge from Pompey's James Bolton.
This article will be updated to provide more information on this story as it becomes available.
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