Chile's victory against Cameroon in their opener gave them a great start to their maiden Confederations Cup campaign, after qualifying by defending their Copa America title in 2016.
Both teams have scored in 5 of Germany's last 6 Confederations Cup matches and in 3 of their last 4 internationals.
"We have a programme, we train at a given time and when you arrive at the hotel and don't have dinner until 10 o'clock in the evening, it's really unpleasant", he said. "It's one of the most flexible teams in the world and this means a special challenge for us".
Although those within the Germany camp agree that their team got off to a good start, there were still a few unexpected defensive gaps that Chile will be determined to exploit.
The Germany boss will also switch some outfield players, but keep his trusted core.
Joshua Kimmich - considered the heir to German legend Philipp Lahm - was industrious at right-back and captain Julian Draxler, at 23 already a veteran in the German set-up, posed his usual threat going forward.
"It doesn't make sense to make seven changes for Chile but three or four might change".
"I think things must be reviewed for the World Cup next year".
The most recent was in 2014 when Mario Goetze's goal sealed a 1-0 friendly win in Stuttgart.
"Australia play with a lot of fighting spirit and I expect a hard game against a team with a different style to Chile", said Cameroon's Belgian coach Hugo Broos.
The Lyon defender's experience at the top level has been sorely missed and the usually calm Cameroon defence was hustled consistently by Chile, something that Australia could take cue out of. "Sometimes we are better than our rivals and win, sometimes we lose". Fans should expect an open game between teams that like to play on the front foot.