Will Johnson and it's not close. I think he'll be making Pro Bowls by his 2nd or 3rd season.
If Johnson was unavailable, and say Jeanty dropped in the re-shuffle, I would probably draft Green or Pearce. You could sell me on either. Nolan is absolutely in play too.
I'm not bothering with Josh Simmons. We have gambled on so many of those injury rehab candidates, and they've come back to bite us every time. The only one I can remember who worked out is Sean Lee, and it's not like he overcame the injury bug either.