The current Switzerland boss believes that his ex-employers have what it takes to add to their recently-secured Bundesliga trophy by successfully defending the European title.
"It is always sensational when a team gets to break such records," he told RMC Sport. "No team have been champions so early in the season.
"This is a sensational performance from Bayern. Pep Guardiola has made them even better - a coach who had already won everything.
"For me, Bayern are the favourites for the Champions League."
Bayern have been drawn against Atletico Madrid in the quarter-finals of the Champions League.