Manchester United legend Gary Neville has told Arsenal boss Mikel Arteta to copy Sir Alex Ferguson's theory in order to sort out the Gunners' defensive woes.Arsenal's back four has been a problem area for them long before Arteta's appointment as manager in December last year.David Luiz put in a horror show performance against Manchester City last week, with the Brazilian at fault for two goals and getting sent off, effectively ending his short stay at the Emirates.Arteta's other defensive options include the unconvincing duo of Sokratis Papastathopoulos and Shkodran Mustafi, who have both made similar mistakes to Luiz during their time at Arsenal.Neville believes the Gunners' defensive options play with too much emotion and that Arteta.
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