Toni has been struggling with a rib injury recently and Bayern boss Jurgen Klinsmann says he will not be able to return for the match.
“The healing process is taking a little longer than we had originally hoped,” said Klinsman.
“He will definitely be out of this weekend’s Bundesliga game and then the Fiorentina match. We hope to have him back soon after.”
Toni joined Bayern from Fiorentina in the summer of 2007 and has been a huge success in German football.