According to the CEV match center, Stuttgart will play with Künzler and Wezorke instead of Lee and Schölzl. That's a surprise, but maybe Lee is still not fully recovered. Or the information on the cev page is not the final lineup.
The starting line-up probably isn't final until 20 minutes before the match or so, but Stuttgart brought only 11 players to Lodz, Keller and Hart are missing.