Arsene Wenger admits he may have to dip into the transfer market depending on the severity of Arsenal defender Sebastien Squillaci's injury.
Squillaci suffered a hamstring injury during Saturday's FA Cup third round draw with Leeds United and is waiting to learn the extent of the damage.
The Frenchman joins Thomas Vermaelen on the sidelines and a lengthy spell out of action for Squillaci could force Wenger's hand.