Maybe as a late round flyer. Maybe.
It's not like they aren't going to watch any film at all. Whatever crazy workout numbers he may put up, you can watch every game for 3 years and never see it translate onto the field.
For a point of reference, perhaps the all time workout warrior/1st round bust was Mike Mamula from BC. He had 12 sacks his junior year, 17 his SR year and was All Big East as a Sr.
Zach Harrison has 3.5, 2 and 3 sacks respectively in his first three years. That's it. Any combine numbers Harrison put up would only make his lack of production be a bigger red flag imo.
Also, if they test his first step, he's not going to do well at all. Dude gets off the ball like a 300lb DT.