Arsenal defender Takehiro Tomiyasu was injured in the Europa League round of 16 second leg against Sporting Lisbon. The 24-year-old had limped off injured in the first half after Arsenal boss Mikel Arteta tried to protect his key players by making five changes.
The Japanese had to be substituted during the match due to a right knee injury and underwent surgery on Tuesday. The defender had a successful surgery but he will miss the rest of the season.
"Tomi has had successful surgery in London on Tuesday and will be ruled out for the remainder of this season. Everyone at the club will now be working hard with Tomi, so he can join pre-season training ahead of next season," Arsenal announced on social media.