Harry Kane must prove he can perform on the big stage as he attempts to lead Bayern Munich to Champions League glory this season. Former Bayern defender Holger Badstuber claims the England captain has gone missing in key matches during his first season in Germany. Kane surprised many people in England when he opted to leave Tottenham for the Bundesliga on the eve of the new season last summer. He has scored an incredible 42 goals in 42 games in all competitions, registering a further 13 assists for his team-mates. But Bayern have missed out on the Bundesliga title for the first time since 2012…