Allen was last on the practice report in Week 8 when he was limited in the final session of the week with a back injury. He also was on it on the Friday before the Week 4 game with a hip injury that limited him.
Coach Brandon Staley said he's "hopeful" Allen can play Sunday against the Packers.
Allen leads the NFL with 73 catches and has 895 yards and six touchdowns.
Safety JT Woods (illness) was limited as he works his way back from the reserve/non-football illness list.