I think Ten Hag will be successful in this German adventure. A manager who won trophies with Manchester United will also be successful in Germany. The Bundesliga is a major goal for Leverkusen, and I hope they win. Bayern's wins every year make the league less exciting.
In as far as the difficulty time that Erik Ten Hag had at Manchester United doesn’t make me to see him less as a manager because I seriously still rate him as a very good manage I don’t agree with you that anybody that won trophies at Manchester United will ultimately succeed at German league. Yes for me he will be at a place where there is no too much attention like Manchester United but that doesn’t transcend to him been successful at Bayern Leverkusen. Take for example Tuchel who had won champions league with Chelsea couldn’t win a league which Bayern Munich has been winning all years which is many would have said is much easier.
For me I think Ten Hag will have some difficulties with the team at a start because of the players that departed, it will definitely be a whole new different team and for them to be able to play as a unit again and according to his pattern it will take some time but luckily for him he has this summer preseason to do some work and hopefully Dey will be ready by then