Arsenal have been dealt a massive injury blow after Abou Diaby was ruled out for up to nine months.
The injury-prone midfielder has torn his anterior cruciate ligament in his left knee and will be sidelined for the rest of the year.
The 26-year-old France international faces an operation on the injury which he suffered in training on Wednesday.
An Arsenal statement read: ‘The club can confirm that Abou Diaby injured his left knee in training on Wednesday and subsequent scans have confirmed that he has torn his anterior cruciate ligament.
‘Following consultations with specialists, Abou will undergo surgery to repair the injury in the near future. Abou is expected to be out for around eight to nine months.
‘The thoughts and best wishes from everyone at Arsenal are with Abou, and we all wish him a successful recovery.’