The German playmaker signed with the Gunners from Real Madrid on deadline day and is being tipped for big things in England by many who know him.
Now one of his fellow countrymen, USA boss Klinsmann, suggests he will really step it up in North London.
"Arsenal is one of the best 11, 12 teams in Europe and now he gets the chance to take responsibility," the former Tottenham star told Die Welt.
"At Real, it was so that [Sergio] Ramos and [Cristiano] Ronaldo called the shots. Now Mesut can assume such a role in London. He is now catapulted into the role of a leader.
"Ozil has learned a lot in recent years of being a big fish in the Madrid shark tank. He now takes this experience with him and that's great for Arsenal, Mesut and for Germany."