
Adeyemi is staying at Dortmund. Very good news for them and the fans for sure.

He is one of the most valuable and talented players in the squad currently. He is still very young (23) as well. I thought maybe they might lose him in case of an interest from a bigger team.
Dortmund really need him on the RW position as he is the best player they have there. Kovac wants to play bigger and needs such talents being kept in the squad.
This is really good news for the fans. Honestly, i thought he would leave somewhere this summer, but it looks like he decided to stay. First of all, as you mentioned, he's young, has fighting spirit and great speed, which we've seen in his excellent performances for Dortmund.His current market value is €45.00m, which isn’t a small amount, and i believe with strong performances, he can increase that value even more. Also, in my opinion, Dortmund could bring in at least one more left winger, since Julien Duranville is injured. All in all, great news for Dortmund!
Adeyemi was quite popular during this transfer window. His decision to stay at Borussia Dortmund is a huge plus for the team. Dortmund will benefit greatly from him next year. Furthermore, they played poorly last year and will be aiming for the title this year. Therefore, Adeyemi's retention was crucial as a key player. I'm sure the fans will be delighted. This is a deal that strengthens not only the fans but also the manager's hand.