What Bayer Leverkusen, the Dutch manager, is trying to achieve is easier than Manchester United. Manchester United faced many tough opponents when aiming for the Premier League title. However, Bayer Leverkusen will now only face serious competition from Bayern Munich. Therefore, a less competitive Bundesliga is more likely to be successful than the Premier League. It could succeed there.
The three players who left Leverkusen were all Leverkusen's best players. They are the players with the best stats in the Bundesliga. Ten has a new challenge to continue the good trend of Xabi Alonso. This means that with the departure of Writz, Tah, and Frimpong the coach must be able to utilize the transfer money to buy new players.
These conditions are common in the soccer industry. Clubs not only win trophies, but business comes first. I think Leverkusen are smart they should continue to make new stars as a business goal and achievement. Ten Hag has also done for the long term, the transfers he has done are on young players. Just one Dutch international goalkeeper Mark Flekken (32), along with eight players under the age of 24 - five of whom are 20 or younger.
Source:
https://www.bundesliga.com/en/bundesliga/news/bayer-leverkusen-youth-first-signings-under-ten-hag-tillman-quansah-maza-rolfes-33066