After Borussia Dortmund finished their Asia tour they have announced that they are currently planning a tour to the USA in the summer. Since American football (NFL) also wants to gain a footstep in Germany this step from Dortmund makes sense.
During their tour in Asia Dortmund surprisingly lost the last game against the Vietnam national team with 1-2.
It's a good step taken by Borussia Dortmund because they are keeping themselves busy by using this long holiday to visit countries in Asia and hold matches. It would be great to increase the cohesiveness of their squad. It seems that's what they hope with the tour they are running will have a positive impact on their chemistry. Rightfully so, they are still doing test matches in the middle of the break like they did in pre-season.