He wants to create his own risk, but I think Ten Hag is taking an unnecessary risk with Bayer Leverkusen. I think he's underestimating the quality of the German league. After moving to Germany after the Premier League, he must believe that 20-year-olds can bring success there. Time will tell where Leverkusen will be at the end of the year. If Leverkusen isn't in a good position, the manager is solely responsible.
In the end, the coach is always blamed for the failure of a club in competing in the competition, although honestly all elements are responsible for the failure. Ten Hag came to Leverkusen in a team that was not good and there might be many reasons that made it difficult to develop the team. Starting from the quality of the available players and the player transfer factor that does not go according to his wishes. The Bundesliga is different from the English League, but if the availability of the players owned is not as good as the top team like Bayern Munich, then don't expect Leverkusen to repeat the success like on when Xabi Alonso became their coach.