Not yet, and can't be certain Clawson will give a definite at today's presser. Hoping to at least get whether he'll be back for spring or summer or fall camp, however early they think he'll heal.
I'm inclined to think, given he wasn't in some kind of gruesome hit or anything, it's something along the lines of a meniscus or MCL, i.e. something that requires surgery but doesn't require reconstruction or anything like an ACL (as is my knowledge of those injuries).
I think you are right. When ACL injuries happen, you immediately know you are f*cked. About half the time, you can't put any weight on it and you know you are done. But the other half, you feel the pain/nausea for about 30 seconds and then it seems all fine - you can get up and put weight on it and walk on it almost fine - sort of like what happened with Klay Thompson. Of course, the first time you make any cut or turn a corner, it goes out, which is so weird that you sort of panic and won't put yourself at risk again.
There are a sliver of athletes - like a Dujuan Blair or a Philip Rivers, that apparently don't need an ACL for knee stability. Rivers played the entire 2nd half of a playoff game on an ACL tear that happened in the first half (against the Pats), and Blair may never have had ACLs.
But I am rambling - the point I meant to get at is that there is a simple knee test any team doctor or even an assistant can do and if you fail it, you're done. They won't let you back on the field. They have you bend the knee and put your foot on the ground and they sit on the foot, and then they move the bent knee joint back and forth and if it gives - and it is pretty obvious - that's it. The fact that Wake medical let Greer back onto the field and we have been probably more conservative in letting guys back on the field hurt or banged up leads me to believe that he passed his ACL test and doesn't have a tear. I suppose it is possible he had a partial ACL tear, but most likely meniscus, me thinks.
I have had 3 ACL tears and two of them I walked away from. The first one, I had to be carried off and couldn't put any weight on for days.
To wax on for no reason, the reason ACL surgery repairs are often delayed weeks after the injury is due to the desire to do the operation when there is no swelling. There doesn't seem to be much of a pattern for knee swelling on ACL tears. Some blow up like a balloon and it weeks before a good surgeon will allow you to go under the knife. For others, it is a few days. I think Klay's knee must have blown up because I think it was nearly a month before he had his ACL surgery.