The 54-year-old feels the coach's team selection for the game cost his side a place in the final.
Former Germany star Lothar Matthaus believes Pep Guardiola's team selection was to blame for Bayern Munich's DFB-Pokal semifinal defeat to Borussia Dortmund.
The Bavarians were beaten 2-0 on penalties after the game finished 1-1 at the end of extra time, with all four of the club's penalty takers missing from the spot.
Matthaus has since reflected on the game and felt Guardiola made a string of errors in both his selection and substitutions on the night that ultimately cost his side dearly.