According to German media reports, Sane's knee injury was the same knee that underwent surgery last summer.
In Bayern's 1-4 loss to Hoffenheim, Sane was injured and left the field. Bayern coach Flick confirmed that Sane suffered a knee injury.
German media subsequently disclosed more details. Sane was reported to be absent for 3-4 weeks. At the same time, his injured knee was the same knee he had undergone surgery last summer. Sane suffered a serious knee injury in the Community Shield Cup game last year and was absent for nearly half a year.