Germany's Instagram account showed off Muller writing his letter and sent a message to the England skipper: "Hey England. Whatâs up Harry Kane? âď¸ We just finished our 5 days in your future team basecamp here in Thuringia đŠđŞ Great conditions, very friendly people, and sometimes itâs even raining đ§ď¸ Sounds perfect, right? đ Have a good time here in Germany! See you at the Euros! đ"