Bayer Leverkusen will be ready to fight again with their new manager. They will face Bayern Munich, who will be their most serious rival for the title. I predict they will finish lower than last year because I don't trust their manager and they've lost key players.
It would be much better if Leverkusen were better prepared to compete for the Bundesliga title this season with their new manager, making the Bundesliga much more competitive. But if Bayern Munich doesn't face any opposition comparable, there will be nothing interesting about this season's Bundesliga competition. Ten Hag's challenge will not be easy because his current team still has many weaknesses. Moreover, they are missing several key players, making it even more difficult for him. Doubts about the manager's abilities will also influence Leverkusen's results this season.
Many doubt Ten Hag and not only that, Leverkusen's management also does not support by bringing in many quality players so we can see that overall Bayern Munich's strength is much better than Leverkusen so I think realistically that Leverkusen will not be able to put fierce pressure on Bayern Munich for the Bundesliga title.