Arsenal striker Nicklas Bendtner has admitted he faces surgery this week.

The 21-year-old Dane picked up the knock in last month's 3-0 derby win over Tottenham and had been expected to miss around a month.

He told the Daily Mirror: "I will have an operation. I don't know how long I will be out."

The injury was at first thought to be a strain but if it is a hernia, he could be out until January.