Götze, Rode, Schmelzer and Pulisic are the only ones I'd recognise. Reckon both managers have agreed on weaker teams here as Dortmund could have put out a much stronger line up than that.
Toprak was a big signing from Leverkusen last year. Also picked up Zagadou from PSG last year, remember from the transfer thread.
I make it 6 senior players for them: Hitz, Gotze, Rode, Schmelzer, Pulisic, Toprak.
Zagadou is debatable.
4 for us: Bravo, Mahrez, Zinchenko, Denayer.
And the last 2 are pushing it.