I agree that Serhou Guirassy showed an impressive very good performance last season and that Dortmund was very lucky as there was a few other Europe Top Clubs to get Guirassy.
Even i am a big fan about Füllkrug and Haller i guess that one of them will be leaving the Club.
Donyell Malen and Guirassy together can be very good combination for Dortmund to get fast forward on the field.
Dortmund continues to strengthen the team, it’s a pity that they were left without Terzic, but apparently he played his role in this team. All of Dortmund's new transfers look very good as always, and this is not surprising, they have long been famous for this. But I suspect that they are doing this not with the aim of trying to become a competitor to Bayern in the Bundesliga, but as part of their strategy, when after a season several of their new acquisitions were able to fulfill their potential and will be sold to other teams.
I think when it comes to things like this, Dortmund always makes a good decision, and that is why they have been known for this. However, do you think Dortmund are going to be a very big challenge for Bayern next season? Furthermore, we have two Bayern in the Bundesliga competition, so are you talking about Leverkusen or Bayern Munich since those are the two Bayern we have? However, if you are talking about Munich, I don’t think Bayern Munich will be a very challenging for Dortmund, but Bayern Leverkusen will definitely be a challenge for Dortmund. Bayern Munich have a new coach, and their performance will definitely go back before they get strong again.
Leverkusen is a threat to all the clubs in Bundesliga because they are the defending champions who won the title unbeaten. That is enough to make the rest clubs be very careful when playing them so that Leverkusen will not win the league back to back.
Dortmund was a threat to big clubs in the Champions League because those clubs don't understand their game pattern but down to domestic league, most clubs understands each other football pattern. Dortmund that was unable to finish as top three on the table was in the finals and played against European best club Real Madrid.
Leverkusen might be able to win the league the second time if there is no good improvement in other club's performance.