Scott Frost likes the potential of Nebraska's offensive line -- you know, the unit that struggled mightily this past season.

But the new Husker head coach made no bones Wednesday about the need for returning linemen to improve their conditioning and physique.

"I like the talent we have up front — I really do," Frost said. "I like the body types and the size. But we've got to change their bodies. The Nebraska I knew, with the strength and conditioning, and what was expected of players, and what they looked like physically — that's not really what we're walking back into."

Enter Zach Duval, the Huskers' head football strength and conditioning coach. His task is to prepare players for Frost's up-tempo spread attack — including a group of linemen with ample experience in a pro-style system.

Among the returners with starting experience are seniors Tanner Farmer, Jerald Foster and Cole Conrad, junior Michael Decker, and sophomores Matt Farniok and Brenden Jaimes.

Nebraska in 2017 finished 87th nationally in total offense (385.0 yards per game), and 120th in rushing (107.5).

"I think we've got guys on the team that can be great offensive linemen, but we've got to go to work in the weight room," Frost said. "We've got to cut our body fat. We've got to eat right. We've got to get stronger, and we've got to get in better shape."

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