Nebraska will decide on quarterback Taylor Martinez's status on Saturday, but the freshman has practiced each of the past three days.
"He's getting better each day," Nebraska coach Bo Pelini told reporters after Thursday's practice. "It will be probably a game-time decision, but he's getting better every day."
Martinez's lower body took a hard hit late in the second quarter of last Saturday's win over Missouri, and was diagnosed with a sprained ankle. He left the facilities in a walking boot after sitting out the entire second half.
Zac Lee replaced Martinez in the game.
Martinez sat out Monday's practice, but on Tuesday offensive coordinator Shawn Watson said Martinez had no swelling or discoloration in the ankle.
Starting cornerback Alfonzo Dennard also returned to practice on Thursday after sitting out most of the week with a concussion suffered early against the Tigers. Pelini said Dennard hasn't been ruled out of the game.
Dennard was replaced by freshman Ciante Evans on Saturday.
The Huskers play at Iowa State on Saturday.