The sale of Jude Bellingham to Real Madrid may have fetched Dortmund good money but they lost a gem in return. Jude Bellingham is one of the best midfielders as well as this midfielder has great goalscoring skills so the absence of this player will undoubtedly have a bad effect on Dortmund's performance in the Bundesliga and Champions League.
Bundesliga has already started the competition between Bayern Munich and Leveskusen. The number one and two positions in the points table are already occupied by these two teams, so it goes without saying that there will be a tough competition between these two teams from the beginning to the end of the season.
I think it's not the first time Dortmund have sold their star, it's been the club business culture. Sure enough Bellingham was a complete midfielder who could be placed in many positions, his departure made Dortmund unstable. Although unbeaten in the first three matches, Dortmund failed to win against the newly promoted club Heidenheim.
I think if Dortmund cannot be consistent in the Bundesliga, of course in the UCL it will be even more difficult for them. We know that Group F is filled with other big clubs, this condition will make it difficult for them to qualify for the next stage.