Laurent Koscielny has admitted that Arsenal left themselves with too much to do against Monaco last night following a "catastrophic" first-leg performance.
The Gunners trailed 3-1 heading into the Stade Louis II showdown, requiring three unanswered goals to overcome the Ligue 1 outfit.
"We say the same thing every year," Koscielny is quoted as saying by the Daily Mail. "Our first game is catastrophic. We have to put it right - play well in two games."
Arsenal have now exited the Champions League at the last-16 stage for the past five years running.