Arsenal have suprised everyone this season and find themselves within touching distance of the Barclays Premier League summit. The January transfer window opens today and, for Arsene Wenger, there is a dilemma to consider. Should he venture into the market and attempt to find a useful player for a reasonable sum, or should he be happy with his current quota?

One deciding factor could be injuries. Arsenal are missing some key names at present and Wenger must decide whether cover is needed at present whilst he waits for some key players to recuperate. Given that Arsenal always seem to have in excess of five players on the treatment table at any one time, buying would seem the most plausible option.

Wenger spoke after the Aston Villa game about the possibility of buying a midfielder, but does he really need to? Alex Song is only away for one month at the African cup of Nations and Aaron Ramsey has shown his quality. What Ramsey needs to do now is show he can perform in that manner on a regular basis, starting against West Ham in the FA Cup on Sunday. With regards to Song, Craig Eastmond and Francis Coquelin are two possible options for short-term cover, whilst Jay Emmanuel-Thomas’ versatility may be put to good use at some point during the month.

Once Philippe Senderos’ departure is confirmed and with Johan Djourou still making a recovery from a long-term injury, centre-back appears to be one position where an acquisition may be needed. William Gallas and Thomas Vermaelen have forged a strong partnership this season, but beyond Mikael Silvestre there is very limited cover, unless Kyle Bartley is given his chance at Premier League level. Up front, Andrey Arshavin is sacrificing his natural tendencies somewhat by playing through the middle at present. Perhaps Eduardo will swap positions with him once he gains some confidence and regular goalscoring form. With Nicklas Bendtner suffering a setback and the possibility that Robin van Persie might not play again this season, centre-forward is another possible area for recruitment. Sanchez Watt and Gilles Sunu, however, will have something to say about that and will be eager to impose themselves should they be given the opportunity.

Whatever happens this month, Wenger’s ultimate decision is bound to be an interesting one.