Kuhn will miss five to six weeks after suffering a muscle bundle tear during training following Borussia Monchengladbach's 3-4 loss to SV Elversberg, according to BILD.
Hendriks suffered a knee issue during Friday's 4-1 win over Koln after coming off the bench in the 78th minute, according to coach Sebastian Hoeness. "I'm cautiously optimistic that it won't turn out to be anything particularly serious."
Nartey (thigh) will miss Wednesday's Champions League opener against Viking due to suspension, leaving him more time to recover from his injury, according to UEFA.
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