The reality of the situation is that there is yet another quarterback competition under Kelly's watch - which would make 5 out of 6 years for him.
Zaire should be given an opportunity to win the job. And while Golson surely struggled in the second half of the season, he has not "lost" the job either.
The chances of actually beating LSU are slim to none. An argument can be made that Kelly can stick with the QB that gives him the best chance to win the game. Probably the better argument will be the opportunity to give both players a shot against the same opponent.