Found this interesting as Arteta is now able to replicate the false FB role on both flanks if needs be.
Read the following and substitute Elneny with Partey and we may see a twin pivot of Partey & Xhaka, with the likes of Ceballos as CAM.
http://youaremyarsenal.com/analysing-arsenals-2-1-win-over-sheffield-united/
Elneny – the false fullback
Mohamed Elneny played a pivotal role for Arsenal, both in possession and out. When building-up from the back, he slotted in on the right side to help form a back three. This helped Bellerin to go forward and ensure Arsenal had width down the right and could stretch Sheffield United. When Arsenal moved the ball higher up the pitch, and the back three, altered to a back two, Elneny would take a position between the wingback and the back two, almost as a “false fullback”. This was in order to maintain the much needed balance when in possession.
Elneny’s position was vital for Arsenal. Psychologically, Bellerin knew that he had cover and could go forward, without having a nagging thought in the back of his mind, about how much running back he had to do should Arsenal lose the ball. As well as this, Chris Wilder, looks for his team to play balls into the channels for his strikers to get onto. Against a back four, this leaves the two centre backs 2v2 with the strikers and pulls them out of position. Elneny guarded against this and could either try and intercept this channel ball, or add extra cover for the two centre backs; Luiz and Gabriel.
