Bayern Munich will look for other alternatives.
Bayern Munich always are looking for alternatives and other players , not only in the transfer period.
They also have a good scouting Team for young players.
I expect nothing from dortmund for the upcoming season. The fact that if dortmund has been missing a lot of players. It means if dortmund needs more time to get its chemistry again like last season. So many great players who have good chemistry in the club already left from the club. I think that it's not a good reason to think that of dortmund will able to compete with bayern this season.
Sounds and looks like for me then you have no understanding of the german league and specialy of Dortmund.
They have for sure more chances this coming season as the last one , i expect this year a more stronger and better team with all the players they have now.
And trust me Dortmund should be not be underestimated in every competition they are playing.