The Bayern Munich forward was pleased with their performance against the defending champions but still sees plenty of room for improvement
Thomas Muller has warned Germany against becoming arrogant after their thrilling Euro 2020 win over Portugal.
Germany laid down a marker by beating the 2016 winners 4-2 at Allianz Arena on Saturday, throwing Group F wide open.
Joachim Low's side bounced back from a 1-0 loss to France in their opening game by seeing off Portugal in impressive fashion, but Muller says they cannot afford to get carried away.