Mesut Ozil has faced heavy criticism in recent weeks for often going missing when Arsenal need him most, including their 5-1 humiliation at the hands of Bayern Munich in the week
And Liverpool legend Souness has waded into the debate and suggested the Germany international is a different player when it comes to play against so-called lesser teams.
But when it comes to playing against the elite sides, Souness claims that Ozil is nowhere to be seen.
Graeme Souness slammed Mesut Ozil for going missing in big games
Graeme Souness believes Ozil is world-class against so-called lesser teams
"Against small clubs, Ozil is a worldie. Against the big boys, he’s a world away," Souness told the Sunday Times.
"The home side went at it full throttle from the first whistle, playing high up the field, and in Arjen Robben, Thiago Alcantara and Robert Lewandowski, they had three players who did not waste chances in big matches.
"What we saw from Bayern was all their qualities magnified. Conversely, what we got from Arsenal epitomised all their failings.
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"Yet again, we saw a group of players who failed to show up on the biggest of stages. Nobody was saying: “This is my level, I’m going to make a difference.”
"Ozil copped most of the criticism. Should we be surprised? Not really. The German is Arsenal in a nutshell. Against the Crystal Palaces of this world, he is an absolute worldie player.
"Against the big boys of the Premier League and Europe, he is an absolute world away. Just remember that this is a £42m player we are discussing.
"Is this what Real Madrid saw when they decided to sell him? Had they spotted the flaw? He was nearly 25 when he moved from the Bernabeu. That is when a player should be in his prime."