Arsenal boss Mikel Arteta is unsure if David Luiz will play again this season.
Luiz is now nursing a knee injury.
After defeat to Liverpool, Arteta said: "We don't know. There a few possibilities on that, being a little more conservative with the treatment or having to go for a surgery. We are talking with the doctors at the moment to make the right decision on that but we'll see. He could be out for a few weeks at least.
"I don't know. It will depend what the decision we take is. If it's more conservative, it will be short-term. If it's a bit more radical with what he needs, it will take longer."
