Bayern Munich boss Carlo Ancelotti hopes to exploit Borussia Dortmund's defensive problems in Saturday's Bundesliga clash.
The champions travel to Signal Iduna Park looking for a win that would put nine points between them and Thomas Tuchel's side after just 11 matches.
Dortmund are the division's top scorers but have conceded twice as many goals as Bayern, who sit unbeaten at the top of the table.
"Dortmund have an attacking style with a lot of fast players. Sometimes, however, they have defensive problems, which is normal," he told a media conference.
"We just have to play our game. We have many options: 4-3-3 is an option, 4-4-2 is an option, 4-2-3-1 is another. It's important that we show our identity.
"It's easier for the coach to prepare the players for such a game. They're all focused. That's more important than tactics."
"Hummels played in the [DFL] Supercup, he has a lot of experience. He has no problem playing against Dortmund," he said.
"Ribery knows what he has to do on the pitch," Ancelotti added.
