LONDON – Arsenal defender Takehiro Tomiyasu underwent knee surgery on Tuesday and will miss the rest of the season, the Premier League leaders said.

The 24-year-old Japan international suffered a “significant” injury to his right knee during a Europa League match last Thursday.

Arsenal, who crashed out of second-tier European competition after a penalty shoot-out loss to Sporting Lisbon, said Tomiasu “had a successful operation in London”.

“Everyone at the club will now work hard with Tommy so he can join pre-season training ahead of next season,” the club said in a statement.

Tomiyazu made 31 appearances this season. Most of his starts have come in the Europa League and FA Cup.

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