Gregorz Krychowiak 
With central midfield cover a transfer priority, the club are being heavily linked with Sevilla star Grzegorz Krychowiak in January according to reports from Spain.
A powerful defensive midfielder with height, strength and pace, Krychowiak provides a different option in the first team to the classy Cazorla and combative Coquelin and is a big improvement on the ageing Rosicky, Arteta and Flamini.
He was linked with us all summer, and at 25 and proven on the European stage, he would provide world class competition in the centre of the pitch throughout a long season at the Emirates that could see us suffer if we lost Santi or Coquelin to injury.