I like Harline, he is a great college TE. But he is not a great pro prospect. First, he is undersized for a traditional TE. And as a hybrid, which is what he will be looked at, he doesn't have the athletism compared to other prospects.
The NFL combine will make or break him. Remember a 4.6 forty in Provo translates into a 4.75 at the combine, and that won't do it.