Bayern Munich have competitive rivals for the Bundesliga title this season but I don't think these oppositions are worthy to hold the grounds, this is never the attitude but the Bavarians will come out on a clean slate.
If you believe the clubs in the German Bundesliga aren't worthy to compete with Bayern Munich for the German Bundesliga title this season, then Bayern Munich doesn't have any rival this season. In my opinion, I don't see any club that can rival and stop Bayern Munich from winning this season's Bundesliga title. Bayer Leverkusen is the only club in the German Bundesliga I know will be a rival to Bayern Munich for the German Bundesliga title, but I lost faith in Bayer Leverkusen after they sold their best players and allowed Xabi Alonso to join Real Madrid this summer.