Bayern have brought in two great defenders in Pavard and Hernandez. Now they are looking to bring Sane in at the wing. Bayern struggled at D last year, which is why they are letting Hummels go and (in their opinion) upgrading to Hernandez.
This last year was Dortmund's best chance. Frankly, they were better than Bayern for much of the year and then they just squandered away a huge lead.
Still, it is good to see Dormund aggressively working on the roster. I don't love Brandt, but everyone else does. Bayern were looking at him long and hard as well and feel he is a great player as does Lowe. I must be missing something. He does have some very good plays, but don't quite see the hype. I'm probably wrong on this one.