The Bayern Munich teen made his Germany debut in Friday's 4-3 friendly win against Switzerland.
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Wirtz told Sport1: "I saw him for the first time this week for training. He is a top player and playing with him is crazy fun
"We won't put too much pressure on him. He will give us a lot of joy in the coming years.
"We just have to rejoice that he is a German."
Wirtz scored twice for Germany on Friday.