David Luiz undergoes minor knee surgery after missing the Liverpool loss
Arsenal have confirmed that midfielder David Luiz went under the knife on Sunday after a knee injury caused him to miss this weekend's 3-0 loss to Liverpool.The Gunners were completely annihilated by Jurgen Klopp's defending champions and lacked ideas at both ends of the field when they fell to an emphatic defeat that left them tenth in the Premier League position.Manager Mikel Arteta would like to see an immediate response, but he must get it without Luiz as the club confirmed on their official website that the Brazilian…