Linebacker Henry To'o To'o, a former SEC All-Freshman selection who started 22 games the past two seasons, and three other Tennessee players entered the transfer portal on Wednesday.
Running back Eric Gray, linebacker Quavaris Crouch and offensive lineman Jahmir Johnson also entered the portal.
This comes two days after head coach Jeremy Pruitt was fired amid an investigation into what UT chancellor Donde Plowman said were "serious NCAA rules violations."
Assistant coaches Brian Niedermeyer and Shelton Felton were also fired, along with four members of the on-campus football recruiting staff, the director and assistant director of football player personnel and a football analyst/quality control coach.