Arsenal midfielder Lucas Torreira fractured his ankle during Monday's 2-0 win at Portsmouth in the fifth round of the FA Cup, the Premier League club confirmed on Thursday.
Torreira was on the receiving end of a heavy tackle from Portsmouth defender James Bolton early in the game and the Uruguayan midfielder was taken off on a stretcher after receiving treatment.
The 24-year-old was later seen leaving Fratton Park on crutches with his right foot in a protective boot.
No timeline was given for his return but the club said they were "awaiting further specialist reviews" before coming up with a recovery plan.
Arsenal, who play Sheffield United in the quarter-finals of the FA Cup later this month, are at home to West Ham United in the league on Saturday.
(Reporting by Rohith Nair in Bengaluru; Editing by Toby Davis)
