Wilshere has cracked left fibula
Arsenal manager ArsÈne Wenger says midfielder Jack Wilshere has fractured his left fibula and will face "a few weeks out".
Wilshere sustained the injury after a training-ground collision last week, but the extent of the damage was only revealed yesterday.
Wenger said: "I had a bad surprise because it is a hairline crack in his fibula ... there is minimal damage apart from bone damage."
The 23-year-old Wilshere, an England international, has had frequent injury problems throughout his career.
He missed five months of
last season after surgery on a left ankle injury sustained against Manchester United in November.