Mario Gotze has warned Northern Ireland that Germany's misfiring attack will improve in their final Group C game.
The World champions have been below their best and lacked a cutting edge against Ukraine and Poland with Joachim Low using Gotze as the leader of his forward line.
"Of course we want to have more punch in attack," said Gotze. "Both in training and in the analysis we are looking for some solutions but we are in a good position."
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