As this is Tuchel's first match as a coach. He will not want to lose in the first match. However, Bayern Munich will play against one of the strongest teams in the league. Dortmund will not want to lose the top spot in the table. This match is challenging for Tuchel. Bayern Munich desperately need full points against Dortmund. But after taking charge of the team, some time is also required to adapt to the players. If Tuchel applies a new match strategy in this match, it will not be easy for the squad players to adapt to it. And so it will be very difficult for Bayern Munich to get 3 points from this match.
Tuchel doesn't need much time to condition his squad with training patterns and strategies. Munich has a greater chance of winning in its new coach's debut. but the fight will be very strict. Both teams want to maintain the top spot in the standings. In the previous meeting, Dortmund was held to a 2-2 draw at home to Dortmund. and now Munich will play at the home of course Munich doesn't want to drop points. Moreover, this is the debut match for his new coach.
I am not entirely sure if that's true or not. I mean this is Dortmund we are talking about and they are leading the league for a reason, they are not doing that bad. I am not saying Bayern will lose, I am just saying that I do not have that much trust on Tuchels chemistry with the team on day one, after a national break at that as well, to just get in there and beat Dortmund for sure.
He might, they might win, that's a possibility, there could be a draw, or they might even lose, at this point I can see all of them at equal chances. If given a chance I would say 33% on all of them, I do not see any favorites on this game, anything could happen.