1: Mats Hummels
If there's one player Arsene Wenger might wish for either in January or next summer, it's Mats Hummels.
The Germany star is now ranking comfortably as one of the most highly-rated defenders in world football and, given the fact he's a lynchpin of Jurgen Klopp's impressive Borussia Dortmund side, his stock is at an all time high.
With the German contingent of Arsenal's squad already forming a strong core Hummels would likely have no problem in adapting to life in England, and his ability means that he could virtually transform the Gunners back line if given the chance.
At £32million he's the most pricey option of the lot, but most fans of the north London giants would agree his bang is worth the buck.