The former Barcelona manager, who recently asked fans to give him time, will take charge of the German champions during a league match for the first time this evening.
Speaking at a press conference, the coach said: "The season starts now, and we are ready. It's difficult to say where we are right now. We are in a process.
"[Borussia Monchengladbach] are one of the best teams in the Bundesliga. They can be very, very dangerous."
Bayern face Gladbach at the Allianz Arena this evening.