Thomas Muller was not in top form last season and was expected to fight for a place in the Bayern starting XI.
The new addition of Tolisso, Rodriguez and Corentin puts pressure on the midfield that already has Thiago, Ribery and Kingsley Coman.
Muller impressed in the 3-2 win over Chelsea, scoring a brace in the first half. Getting at the end of a Ribery cross to get the first and scoring a 25-yard howler for the second.
“This is the business of football. One day you score a goal, you are the best, the next day, you are a nobody. I am confident in my abilities and it was good to score two goals,” said the German international in the aftermath of the game when asked if he had proved his detractors wrong.