Arsenal manager Arsene Wenger has confirmed that winger Alex Oxlade-Chamberlain will definitely miss Sunday's huge Premier League visit to Manchester United.
The 22-year-old was a casualty in Tuesday night's Champions League defeat by Barcelona, leaving the field just minutes after the restart following a first-half collision with Javier Mascherano.
Speculation is rife that the England ace could be set for a long-term absence amid fears that he suffered knee ligament and ankle damage against the Catalans, plunging his Euro 2016 hopes into disarray in the process.
Although Wenger does not yet know the severity of the injury, the Gunners boss says that he will miss the Old Trafford trip.
"He has a scan today, he will not be available for Sunday," the Frenchman told Arsenal.com.
Should Oxlade-Chamberlain receive a lengthy prognosis, the fact that the North Londoners are well stocked in that position would surely cushion the blow.
Victory would see Arsenal go top of the Premier League table if leaders Leicester City and second-placed Tottenham Hotspur both lose their home fixtures this weekend, to Norwich City and Swansea City respectively.