Rookie Jaren Hall to start as Vikings' QB against Packers on Sunday.

Hall previously started but left with a concussion in November.

Minnesota struggled with Josh Dobbs and Nick Mullens at QB.

Star wide receiver Justin Jefferson praises Hall's potential.

Vikings need to win both final games for playoff hopes.

Dobbs went 2-2 as a starter, while Mullens struggled.

Hall, a fifth-round pick, has college experience at BYU.

Winner of Sunday's game gets a boost in playoff odds.

Hall vs. Love: BYU vs. Utah State showdown in the NFL.