4 – Calum Chambers
Chambers is the departure that may generate the most income for Arsenal with the club thought to be in discussions with Crystal Palace about sealing an £18million deal for him. His versatility and ability to play in a back five had many believing that he may stick around this season, but it seems that Wenger is not his biggest fan and after being left out of the Community Shield squad, it looks like a deal that will see Chambers leave the club is not far away.