The structure of Bayer Leverkusen next year is very, very important. They will play with a new coach and the players will need to be in harmony with him. They should complete the transfers quickly so that the new transfers can contribute well to the team. Their return to the championship in Germany depends only on perfect planning.
Yes, Bayer Leverkusen need new players to strengthen their team so they can compete in all competitions next season, especially in the Bundesliga. However, the truth is that even with the current squad, the new coach can still use it to win a trophy. So, it is not only new signings that can make Leverkusen successful. If the new coach is an experienced and tactically sound, it is very possible that he can use the current Bayer Leverkusen squad to even win the Bundesliga.
It would actually be better if they don't give Ten Hag too much money for signings expensive players. They should just give him money to bring in one to three average players and see how the team performs first. Considering how Ten Hag spent money at Manchester United and the players he signed did not perform to the standard expected, it seems many of those players were not worth the signing.So, I would prefer if Leverkusen don't spend too much on signings next season and instead wait to seen the coach performance before allocating more funds for transfers.