Joe Cole says Arsenal's flaws were exposed in their Europa League defeat at PSV Eindoven.

Arsenal lost for just the second time all season on Thursday night, falling afoul of a resurgent PSV side that put them to the sword in a dominant 2-0 display in Eindhoven.

And pundits were quick to dissect the performance from Arsenal, with former Chelsea midfielder Cole claiming that the Gunners still have 'work to do' to compete with the continent's best sides.

Cole said: "When Mikel (Arteta) shows that to his players and the details and the fundamentals - if they nailed that down they come away with a point or three. There's more questions than answers tonight.

"I don't want to be too critical to this group of players because they've been very enjoyable but today is a reminder that there's still work to do and a way to go."

And ex-Gunners defender Martin Keown added: "I don't want this to derail his team - five people missing and five subs on. Strength in depth not quite there but as long as they can learn from that, they'll use this as fuel going into the Forest game."