Arsenal will be without Granit Xhaka until at least the New Year as the Swiss midfielder continues his recovery from a knee injury.
Xhaka suffered ligament damage to his right knee in the 3-1 north London derby victory over Tottenham in September.
He had just returned from a three-match ban before being hit by the injury, although he escaped the need for surgery and a longer period on the sidelines.
But an injury update offered by Arsenal on Friday morning confirmed he would not be returning to training before the end of 2021.