Kieran Gibbs out for a month

Arsenal have confirmed that defender Kieran Gibbs has undergone surgery on his groin and therefore will be out for a month.

The 20-year-old was initially expected to return against Aston Villa on Wednesday, having been out since October.

He suffered a setback in his recovery, however, and faces an extended spell on the sidelines.

The Gunners are currently short at full-back with Bacary Sagna, Andre Santos and Carl Jenkinson all ruled out with injury.

Arsenal continue their league campaign against Wolves on Tuesday afternoon.