Arsenal manager Arsene Wenger has called for the rule regarding away goals in the Champions League to be scrapped.
Both the Gunners and Chelsea were undone by away goals in their last-16 clashes against Monaco and Paris Saint-Germain respectively.
The Frenchman believes that "football has changed" and the rule does not fit into the modern game.
"It's two teams that have gone out on away goals that it should be questioned," Wenger told reporters in this morning's press conference. "It is a rule that is outdated.
"In a direct knockout you can be a bit lucky as well. None of the teams apart from Barcelona appear to be that much superior. It should count maybe after extra time.
"This rule has been created in the sixties - since then, football has changed. The weight of the away goal is perhaps too big today. I still think you can count it maybe after extra time."
Manchester City were also knocked out of the competition on Wednesday night following a 3-1 aggregate defeat to Barcelona.