Arsenal boss Unai Emery is worried about the fitness of his key defender Sokratis.

The defender limped off during a 2-0 win over Everton at the Emirates on Sunday.

But it is unclear as to the extent of his injury. And boss Emery knows that he will have to wait until the results of tests before they know whether it is a serious issue.

"We don't know now but the first analysis is that the doctors will wait until tomorrow," he said after the game to Arsenal's official website.

"It's his knee but I'm hoping it's not too serious."