Seems like a potential talent - size and relative speed.
He's really, really open in the clips I saw but it feels it's as much the lack of quality DBs as it is his route running. He also lets balls plunk into his chest instead of attacking them with his hands. As it stands without training, he'd lose a lot of contested balls, which our current WR2s struggle with.
I'm not sure a development player is the wise round 1 pick for a team on the cusp of a championship. Seems like a round 2 talent, but what do I know.