Arsenal manager Mikel Arteta has confirmed the club will be actively exploring options in the January transfer window as an injury-hit squad threatens to test their Premier League title push.
The league leaders could be without as many as four defenders when they host high-flying Aston Villa at the Emirates Stadium on Tuesday.
Jurrien Timber, Riccardo Calafiori, Ben White and Cristhian Mosquera were all unavailable for Saturday's hard-fought win over Brighton, a result that kept Arsenal two points clear of Manchester City at the summit.
