I don’t think Bayern Leverkusen needs a lot more new players if their current players are not leaving to join other teams now. He will only need few players to join to the team which I am sure will not be a big deal or a difficult one for the club to provide the finances for it. He can still build on his existing players to make them a formidable team as they were in this season. I have full faith in Xabi Alonso and I know he can’t do it again next season.
This mentality is part of the reason why some clubs easily fall off after one season, because they couldn’t build on the success and too much expectations. They definitely had a brilliant season that nobody can take away from them, I even expect them to win the next club of the year. But mate they are participating in the biggest club competition next season. Imagine, having to play against Manchester city and then another to club or so. They need to definitely add players this should be done by allowing players who have long been in the club and have falling the picking order to create more room for potential additions. Adding quality players to the team is way better because it will create more competition within the team which helps every club to stay competitive and hungry
Leverkusen may have performed well in the local league with their current squad but ahead they will play in the Champions League tournament where they could face strong teams like Real Madrid, Manchester City and Barcelona. The team they have may not be able to compete with teams like Real Madrid and Manchester City in tournaments like the Champions League with this team, so they must recruit good players this season even if they are to do well in the Champions League. It is very likely that we will see another strong opponent in the Champions League. We have high expectations for Leverkusen and will always expect this team to perform well in the Champions League as well as in the local league tournament and a new team to win the Champions League tournament title.