Sounds like he's going to the Falcons for a late round pick if he modifies his contract.
That doesn't really say much. You could have a player play 400 snaps of pass coverage defense and thrown at 30 times and 25 of them caught. Those 5 that were missed, bad throw?, pass defensed?, or was the ball Finley'd ...err dropped?
Like that article starts out with, it's pretty dang hard to analyze cornerbacks statistically. You'd need to see how many times they were targeted, how many times they broke up the pass, intercepted the pass, tipped the ball but caught, receiver simply dropped it, etc ...