Arsenal are waiting to see if Kai Havertz is going to be on the sidelines for a period of time after the forward picked up a knee injury. The 26-year-old was not part of the open training session held at Emirates Stadium on Wednesday and the injury is being assessed by the medical department.

Havertz, who earns £250,000-a-week at the Emirates Stadium, was Arsenal's main man in attack last season, but he's since been joined by Viktor Gyokeres as another option for the centre-forward position. As a result, Havertz was on the bench against Manchester United at the weekend, with Gyokeres leading the line for the Gunners.