Arsenal manager Mikel Arteta admits to having concerns about the fitness of midfielder Granit Xhaka.
The Swiss international had to come off in the second half of Arsenal's impressive 3-1 Premier League win over Tottenham on Sunday at the Emirates Stadium.
Xhaka is a key member of Arteta's team, as he is often the first choice to partner Thomas Partey in the centre of midfield.
A Lucas Moura challenge forced him off the field after lengthy treatment during the contest.
"I'm pretty worried because it doesn't look very positive at the moment," Arteta told his post-match press conference.
Arteta added: "That's the beauty of this game and the danger of this game as well.
"It was one of the nicest feelings that I had certainly in this stadium. It was a big occasion for us, a big game, to win it the way we did and to feel that connection. It made it really special."
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