Borussia Dortmund notified 26-year old German midfielder Marius Wolf got injured, and will be back on the pitch before the end of current month:
"Marius Wolf is going to miss being part of the team until further notice, due to a muscular injury. His return into the squad is planned for November.
Get well soon, Marius!"
️ @mariuswolf27 fällt wegen einer Muskelverletzung bis auf Weiteres aus. Der Wiedereinsatz des 26-Jährigen ist noch im November geplant.
Gute Besserung, Marius! pic.twitter.com/XIW7qyBAPK
— Borussia Dortmund (@BVB) November 4, 2021
Source: transfermarketweb.com