Several members of the Borussia Dortmund squad have been laid low by a winter bug in recent weeks, with Ciro Immobile the most recent player to suffer flu-like symptoms.
Jurgen Klopp made light of the situation ahead of Friday's Bundesliga meeting with Stuttgart. "In his case, I have to determine if it's really about his fitness or the fact that we are playing Juventus next week," the BVB boss told reporters on Wednesday.
