Arsenal star Mesut Ozil has calmed concerns that he could be carrying an injury after being substituted while playing for Germany in Tuesday night's World Cup qualifier against Northern Ireland.

The 27-year-old was hauled off at half time, making way for Ilkay Gundogan in the world champions' 2-0 victory in Hannover.

Ozil took to Twitter after the match, writing: "Thanks for taking care because of my substitution but everything is all right guys."

The German national team opted to poke fun at Arsenal fans' relief over the playmaker's fitness.

Arsenal will be back in action this Saturday when they take on Swansea City at the Emirates in the Premier League.