Former Manchester United captain Roy Keane has labelled Arsenal as 'soft' and 'weak' following their Champions League loss to Olympiakos on Wednesday.

Keane, who works as a pundit for ITV, pulled no punches in his assessment of Arsenal's performance against the Greek outfit, which saw them defeated 3-2 at the Emirates Stadium.

"They're soft. They're weak," Keane said ahead of Sunday's clash between the Gunners and his former Man Utd.

"The goals they give away — you saw [on Tuesday] night, two set-pieces again.

"You've got no chance of winning any big game if you defend like that.

"There is a certain weakness to the group. They look like they lack characters, leaders and winners."