Jets coach Todd Bowles is very familiar with the versatile skill set that Mathieu brings to a secondary, as a safety or slot cornerback. After all, Bowles was the Cardinals' defensive coordinator from 2013-14, before the Jets hired him, so he was around for Mathieu's first two seasons. Plus, Bowles' stepdaughter has a child with Mathieu. So Bowles is familiar with Mathieu on a personal level, too.