This is of course awful news and we all feel Jelani's pain.
I do think we should wait until we know all of the facts. I have no doubt that the injury report is real, but the level of severity is unknown. This ACL injury can be anything from a bad sprain to a mild tear to a major tear. It could require no surgery or extensive surgical repair and rehabilitation. Somebody knows but I certainly don't and I'm not sure any of us do. Of course injury news coming out of Penn is often non existent and it may take time for the complete story to unfold.