I hope that Ten Hag gets it right this time, because if his decisions worsen the team performance, it's going to be a shame on him. Having players without backups will be a big challenge should incase, any of them is injured or drops form. Ten Hag can make the club proud of him, if he knows what he's doing. Leverkusen have suffered from poor performance before Xabi Alonso strengthen the club.
It seems the first-team players would tire more easily if a team like Leverkusen didn't have backup players, because every team needs backup players to fill in when key players are injured. So, Ten Hag should think carefully about this if he truly wants to improve Leverkusen, and the team will be very proud of him. But if Leverkusen's next season is worse than the previous two, Ten Hag will certainly face even more criticism from Leverkusen fans, and the team will also be unhappy with Ten Hag if Leverkusen's results are worse than last season.