Arsenal have suffered a huge injury blow, with Jurrien Timber set to undergo knee surgery.
Timber suffered a suspected anterior cruciate ligament injury in the opening weekend win over Nottingham Forest.
Mail Sport reported on Monday that the Holland international had suffered a serious knee injury amid concerns he would miss months of the season.
Those fears have been realised in the last 48 hours following further tests with a knee specialist.
It is understood Timber is now expected to undergo surgery to repair the injury and is likely to miss a minimum six months of the season, although Arsenal are reluctant to put a specific timescale on his recovery.