He hasnt been charged with anything, he's being questioned about something that the longer it goes the less evidence to charge him they have.
Have you thought about this scenario? Hernandez and his friends go out, they get out the Club, they go to Hernandez crib, after they're in the house The victim takes Hernandez rental car to do a Drug transaction near Hernandez house, Drug deal goes wrong, Killers leave the area and Rental SUV is left near the Body...
Anything can happen breh, you jumping too quick to assumptions and all... And what were the Patriots supposed to do in this case? Cut him? you tell me what that Classy NYJ organization would've done with Hernandez?