Leverkusen fans certainly want good results with their new coach next season even though Ten Hag was not good in the Premier League with Manchester United, but because next season Ten Hag will be in the Bundesliga to coach Leverkusen, I hope he can give something different enough for the team to make his name better and more famous in the Bundesliga. Although it will not be easy enough to break Munich's dominance next season because Munich will still be in good condition if the composition of their players is still good enough and does not suffer from long injuries.
For now there is no other option but to trust that ETH does a great job, I think he can redeem himself, in fact everyone has their chance at redemption and it is a fact that he can do it, I like to think about the positive side of people, and seeing how things are, it can be intuited that Leverkusen will only accept good results, the bad thing is that Xabi has accustomed them to the good, that is the pressure that ETH is under.
I don't know why people are doubting Ten Hag and thinking he cannot do much in the club, he is not a bad coach and can definitely manage a team like Leverkusen easily because there is no pressure of any kind in the team like it was was at Manchester United. Manchester United made the job more difficult and complicated for the coaches because they are desperate to become better and didn't want to give coaches enough time to figure things out.
This is a very good opportunity for Ten Hag to redeem himself and I am sure he would also not want to blow it. The German League is not so hard as the premier league and Leverkusen is a well established team already and so they will have access to few good players to make the job easy for him.
If he succeeds then he is definitely not a coach for the big teams.