And a GK.
Also, Bayern will very, very likely rape and pillage us. Our back line blows way too much.
With the injury to Kieran Gibbs against Liverpool on Wednesday and Arsene Wenger's reluctance to use an increasingly shaky Andre Santos, a new left-sided defender quickly become the priority in the past 24 hours. But this isn't a panic purchase, despite the need for speed this week. There was a deal in principle for Monreal to arrive at the Emirates this summer, and he has already been taking English lessons in anticipation of the move. Gibbs' injury simply pushed things along.
The 26-year-old Monreal will fit seamlessly at Arsenal. He has an elegant blend of being a tough tackler and a technically gifted player on the ball. His positioning is excellent, while his decision-making has placed him firmly on the radar of Spain's "big two" for a number of years.