Schalke centre-back faces surgery, but a potential January move to Arsenal is not yet impossible.
A top German international defender linked with signing for Arsenal faces a spell on the sidelines ahead of a key month.
Antonio Rudiger of Stuttgart has become a breakthrough star for Germany this season, but injured his knee in the weekend's clash with Schalke.
The 21-year-old centre-back faces surgery on a meniscus injury, report Sport1, with the exact amount of time he will be out for yet to be determined.
It will become clearer later this week, with Stuttgart Jochen Schenider admitting: 'A long term absence would be a bitter blow'.
There remains a chance Rudiger could be out weeks rather than months, which would still make him a possible mover in January - yet if the news is bad, any potential transfer to Arsenal would be off the agenda.
Rudiger revealed in October that he is even an Arsenal fan, reported The Mail, and his level of talent and potential would make him an ideal addition for the Gunners. importantly he would have been available within the club's £20 million price range.
Now it is going to be a case of waiting to see what his fitness brings, but this knee injury may just have blocked the chance for his 'dream move' to happen.