David Luiz undergoes minor knee surgery after missing Liverpool loss

Arsenal have confirmed centre-back David Luiz went under the knife on Sunday after a knee injury caused him to miss the weekend's 3-0 loss to Liverpool.

The Gunners were completely mauled by Jurgen Klopp's defending champions, lacking ideas at both ends of the field as they slumped to an emphatic defeat which left them tenth in the Premier League standings.