The 24-year-old right-back was withdrawn nine minutes into the Europa League last-16 defeat by Sporting Lisbon last Thursday and left the Emirates Stadium on crutches. The club confirmed the Japan international had successful surgery in London on Tuesday and he will now miss the Gunners' remaining 10 matches of their Premier League title run-in. Tomiyasu has been a regular appearance maker during Arsenal's surge to the top having played 31 games across all competitions this campaign.
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The defender picked up a knee injury against Sporting Lisbon last week.
Doherty played under Conte before leaving Spurs for Atletico Madrid in January.