3) Jose Antonio Reyes
The Gunners broke their club transfer record in 2004 to secure the signing of Jose Antonio Reyes from Spanish club Sevilla in a deal that was eventually worth £17.5m.
Reyes generally impressed on the pitch for the club but struggled to settle in England, eventually returning to La Liga where he enjoyed a long career with the likes of Atletico Madrid. Wenger will hope that Alexis Sanchez does a little better as his latest big-money La Liga signing.

