I'll also add that this isn't just some raw athlete rated highly because of "measureables." He's a guy with a polished skill set AND the speed / elusiveness to get open, who produced despite being down the depth chart on a loaded Texas team with good WRs playing ahead of him.
With a quality QB slinging it, Cook is a lot closer to being able to do an AET-esque jump than a guy hoping to put it all together.
Of course, he has to walk the straight and narrow -- that's totally up to him. And if he can't or doesn't, then he won't be here long. But if he does, and he buys into what Fran Brown will demand, then he's going to thrive.
And he doesn't even have to be the guy -- that's the thing. We have a good group of experienced WRs, nothing will be handed to him.