Kawasaki Frontale defender Tatsuki Nara fractured his left tibia in training, the club announced on Wednesday.
The injury, which took place on October 7, is a reoccurrence of the injury he suffered in May that prevented him from participating in the 2016 Rio Olympics.
Nara is only expected to return to action in three to four months, when the 2017 MEIJI YASUDA J1 League season kicks off.