Arsenal face an anxious wait to find out the extent of the hamstring injury to winger Alex Oxlade-Chamberlain. The 21-year-old, who pulled up during Monday's 2-1 FA Cup win at Manchester United, was having a scan on Wednesday.

Wenger told the Arsenal website: "Chamberlain has a hamstring strain. The only thing we don't know is how bad it is, because usually the scans are only done 48 hours after the accident.

"That will be done on Wednesday."