Arsenal manager Unai Emery insists his side have a collective responsibility to improve defensively after throwing away a two-goal lead against Watford, pointing out that the club have been sitting too deep when they're out of possession.
The Gunners faced 31 shots at Vicarage Road last week and made a handful of defensive errors, highlighting the club's weaknesses at the back which have also flared up in matches against Liverpool and Tottenham.
Arsenal's back four will be boosted over the next few weeks as Rob Holding,
"Secondly, sometimes we are defending deep, more deep than we want to. Our block is more deep than we want usually. We don't want to defend in that situation, too deep, many times.
"We could do that work better and, on Sunday at home against Aston Villa, we are going to try to do better."
Arsenal were able to keep a clean sheet against last season's Europa League semi-finalists Eintracht Frankfurt on Thursday.
But they still faced 24 shots and largely relied on a stunning individual performance from back-up goalkeeper