C.J. Anderson has torn the meniscus in his right knee, Mike Klis of 9NEWS tweets. He is likely headed to IR. He’ll have arthroscopic surgery today to determine whether it’s a full or partial tear, Adam Schefter of ESPN.com tweets. 
There has been a roller coaster of reports on Anderson with some indicating that he could be out a few weeks while others hinted at a longer stint on the sidelines. Now, we know that Anderson will be out for at least two months.
It’s not immediately clear whether Anderson could conceivably make a late season return. Anderson’s timetable will likely hinge on the severity of the tear. A partial tear of the meniscus could allow for a faster recovery. However, a “bucket handle tear” of the meniscus like the one suffered by Adrian Peterson would rule him out for a lot longer.
Earlier today, Ian Rapoport of NFL.com (on Twitter) reported that Anderson told people close to him that he is done for the year. Anderson issued a denial of his own on Twitter, but later deleted it.