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In retrospect, Gervinho is a winger and should be providing much needed width for the club. In the last few games especially, it seems that Arsenal has been lacking in that aspect of their play.
Part of this is due to the inefficiency of Lukas Podolski(due to fatigue most likely) and Andre Santos down the left as well as Aaron Ramsey's tendency to cut inside.
Right now, the attacking players who do line up out wide all have a tendency to drift inside and sometimes that clogs up the space for Santi Cazorla to do his work.
When the fullbacks play as they are supposed to, as Kieran Gibbs, Carl Jenkinson and Bacary Sagna usually do, there is a solid amount of width in the team's build-up play.
Arsene Wenger and company could tweak things slightly to give the Gunners an advantage. While there is no true out and out winger like a Jesus Navas in the side, Gervinho, Theo Walcott and Alex-Oxlade Chamberlain stand out as players who could fill that role.
On one flank, Arsenal could play a true winger and have him and his fullback creating constant problems by overloading that flank, much like Schalke did on the right against the team.
Those players could provide an outlet time and again while the winger on the other flank cuts inside to help with possession and allows his fullback partner to create the width.
It may not work perfectly all the time, but it would give the Gunners some strength on one flank in particular and allow the central players an outlet to help stretch the opponents defense.