With McMillan and Narcisse on the way out the door, LSU is down to two scholarship quarterbacks: Joe Burrow and Myles Brennan.
Burrows transferred to LSU after playing in two seasons at Ohio State where he appeared in 10 total games, completing 29 of 39 passes for 287 yards and two touchdowns. He also rushed for 53 yards and a touchdown on 15 carries.
Brennan appeared in six games as a freshman last season, completing 14 of 24 passes for 182 yards, one touchdown and two interceptions.
LSU coach Ed Orgeron has not named a starter ahead of the opener against Miami.