Cape Town - Arsenal head coach Unai Emery says he could look to strengthen his defence when the January transfer window opens.
The Gunners have been impressive this season and currently occupy fifth place on the Premier League standings, having lost just twice.
But Emery finds himself with just one fit centre-back in Laurent Koscielny ahead of facing Southampton on Sunday.
Up first though is a home clash in the Europa League with Qarabag on Thursday.
Konstantinos Mavropanos, Rob Holding and Shkodran Mustafi are injured while Sokratis Papastathopoulos is suspended.
Emery said: "I think if we can take one player to help us at centre-back, I think it's a good option.
"The transfer (window) is not easy. Koscielny is coming back and for the team it's very important he is coming back.
"Then we are going to wait and see how Mavropanos is improving with his injuries, because he is also a centre-back who can help us.
"Another option we can play with two, with three, and (full-backs) Nacho Monreal and (Stephan) Lichtsteiner can play in this position.
"I prefer to use, if we can, a specialist centre-back."