Ok, so per the Courant, its a torn labrum. That was the first thing I had and it wasn't nearly as painful as the torn rotator cuff. Its unlikely that he'll need the full 4 month allotment for recovery. And he'll have pretty good motion not long afterwards.
The 4 month recovery period is typical for a more severe problem like a rotator cuff where they want your shoulder immobilized for a solid 6 weeks with no rehab whatsoever. With the less severe torn labrum, he'll be into rehab within a couple weeks, and within a month after that, will feel pretty much normal. Especially for a guy that young. His recovery time should be less than average.
And I tell ya, the lack of information and credibility, and the apparent disinterest in correcting that within the media is staggering.