He can say what he wants, but he needs to bulk up if he plans on taking some hits in the NFL, which this ACL injury will probably hinder some physical development during the offseason.
No.
He likely wont come back 100% and will have a slow Redshirt Sophomore season. NFL teams don't usually draft guys coming off knee injuries in the first round. He'll only help his stock by staying a second year (after the injury)
JMO
We can tell your opinion hasn't kept up with NFL trends and drafting ACL-torn players.
If Hunter stays until his (RS) Junior season, it's because he has a desire to stay -- not because he won't be rehabbed.