Ten Hag’s dismissal was the right decision, not only because of Leverkusen’s declining performances but also due to several deeper issues, such as his interference in player transfers, friction with the staff, and other actions that displeased management. initially, Leverkusen appointed him with the expectation that he would focus strictly on coaching and keep the club’s business matters separate, however, over time, he became increasingly involved in areas outside his role, which ultimately led to his dismissal. he is the one who made the situation worse for himself.
I thought that the reason why the coach was sacked was just because of the poor performance of Leverkusen the information about his interference with the signing of players wasn't mentioned in the case but if the management made him agree not to get involved in the business of the club then he shouldn't have involved himself even when the team is not doing well. Having issues with his players is one thing Ten hag is fond of doing the players and staff must have reported him to the management before they decided to take action to sack him.