A pre-trial hearing is scheduled for Wednesday afternoon in Fall River Superior Court.
Hernandez was indicted in August in the killing of 27-year-old Odin Lloyd, a semi-professional football player from Boston who was dating the sister of Hernandez's girlfriend.
He pleaded not guilty to murder and five weapons-related charges last month. His attorneys agreed then that he continue to be held without bail but reserved the right to seek it later. The defense says the state will not be able to prove its case during a jury trial.
Four others, including Hernandez's girlfriend and cousin, are facing charges in the case.