You are right, I also can't trust Ten Hag. Last season was not good for Leverkusen, they couldn't even compete with Bayern Munich for the title. I even have doubts about the upcoming season. Ten Hag doesn't have much of a reputation and he doesn't have much of a track record. Last season he was linked with Manchester United where his performance was not good at all and he was putting Manchester United in a bad situation. Now it remains to be seen how he will do with Leverkusen, but I don't think Leverkusen will be able to do anything good in the upcoming season.
The things are not seen in the favour of Eric ten hag as it's so long if he could bring any goodness in his performance book. Because the situation where Eric Ten Hag leaves Manchester United was really very terrific and not less than a disaster for the team's performance. And now Eric Ten Hag joined the Bayern leverkusen as their new coach. And there are no such better things which come from him as he is leasing now a new team with new talent and new faces. So all these things seem like he is unable to do any good upbringings in the team. I think in this situation this will remain the last chance for him to prove himself. Because now it is very difficult for any other team to trust a person who failed more than one time to get any team in the way of betterment.