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."