France defender Laurent Koscielny has returned to training at Arsenal after recovering from an Achilles operation.

Arsenal boss Unai Emery said: "He's working very hard. First he was in France. He came back to us last Sunday. We are happy to have him here with us, because he's our captain and he's showing us his spirit to stay with us.

"We need to be patient with him because the injury was an important injury. It's clear that it's very important to stay with us, working here and showing us that he wants to help us."