I have a few:
1: Dontre Wilson was certainly overrated his freshman season, but he may be one of the most underrated weapons on offense now. He was one of the most consistent performers on the team until the Michigan State game his sophomore season. He may not be able to break the big play with any regularity, but he can gain chunks of yardage at a time. He will make the most of his touches this year, and will be second on the team in all-purpose yards (behind Curtis Samuel).
2. Gareon Conley finishes the season as an All-American. He was excellent last year with the exception of a couple of lapses in the Notre Dame game. Nevertheless, I expect him to produce one of the best seasons that an Ohio State cornerback has had in recent memory.
3. Chris Worley will be a First Team All-Big Ten Performer this year. When he and Lee were both redshirt freshmen, there was quite a battle brewing at the spot for a while. I think it is unrealistic to expect Worley to exactly replicate the production of Lee, but I can certainly see him being an outstanding player for the Buckeyes this year.