Jury selection for that trial will begin Monday morning.
One piece of evidence that may be presented is an email chain in which Spanier allegedly wrote he, Curley and Schultz could be vulnerable for not reporting the claims against Sandusky.
Spanier was later charged with a number of felonies but his more serious charges were dropped in 2016.
Last week Schultz and Curley entered guilty pleas to lesser charges, raising the possibility they could testify against Spanier.
Spanier faces child endangerment and conspiracy charges in connection to the alleged coverup of Jerry Sandusky's crimes.
Paterno had tried to go out on his own terms by announcing his retirement without talking to the board of trustees, but they notified him by phone, and then announced the evening of November 9, 2011 that he and university President Graham Spanier had been fired.