Speak to anyone at Arsenal and it is quickly obvious that researching Sanchez's personality was as fundamental to the scouting process as his footballing qualities. And to understand Sanchez, to appreciate the mentality that is so admired by both Guardiola and Wenger, you must also know about a small coastal town called Tocopilla. There are less than 25,000 inhabitants in Tocopilla but, beyond being the birthplace of Sanchez, it has attracted global attention for also being the town in Chile that was most devastated in 2007 by an earthquake that reached 7.7 on the Richter Scale. It displaced 15,000 people and destroyed 30 per cent of all standing structures.