If Leverkusen performs poorly this season, then Leverkusen's maximum supporters will blame Ten Hag for this poor performance because this manager's past record is not very good. When this manager was given the responsibility of Leverkusen, I saw that most of the Leverkusen fans did not take the responsibility of this manager well, and then they understood that if this manager can do good for the team, then it is okay, but if the team's performance is a little bad, then the full responsibility will be given to this manager.
Last season and the season before that, Leverkusen was a team that performed well, but we can see their performance deteriorating since the beginning of this season. Bad performance in one or two matches is acceptable, but if Leverkusen continues to perform such bad performances continuously, then it will definitely be a big problem for the team.
The challenge for Ten Hag is at least to maintain the team's performance as it was last season. A slight decline in performance will certainly lead to criticism of him. However, a slight improvement will not mean much because Leverkusen has already performed well in previous seasons.
If Ten Hag cannot make this team better, it will definitely become a factor that will be closely watched. There has already been a lot of criticism regarding his selection as the replacement for the previous coach, and if there is a decline in performance, fans could very well become angry.