Germany general manager Oliver Bierhoff, meanwhile, backed Thomas Muller despite the Bayern Munich forward's failure to score at Euro 2016.
"I don't have any worries about Thomas Muller," he said. "He's extremely positive. He doesn't think his role is only about scoring goals."
Bierhoff, who scored both goals as Germany beat Czech Republic 2-1 in the Euro 96 final, added: "It's about time to write new history with those players."
