The Las Vegas Raiders were connected to cornerbacks throughout the free-agent process. According to youtube, Stefon Gilmore was a shoo-in, and JC Jackson had an offer from the Raiders.
There were additions to the position with the trade for Rock Ya-Sin and the signing of Anthony Averett. Both players could be contributors when the football rolls out in September.
Cornerback appears to be a focus for the Raiders even with the depth from free agency. In just the past week, there have been three top 30 visits from cornerbacks—Marcus Jones from Houston, Kalon Barnes from Baylor, and Mario Goodrich from Clemson.