Kelly is returning to the NFL for the second time. He was previously the head coach for the Philadelphia Eagles and the San Francisco 49ers, holding a 28-35 record combined in both stints. Former USC Trojans coach Pete Carroll has plenty of familiarity with Chip Kelly as the two once coached against each other in the PAC-10 conference when Kelly led the Oregon Ducks.

The Las Vegas Raiders are hiring Pete Carroll to be the team’s head coach, according to reports. ESPN’s Adam Schefter and NFL Network’s Ian Rapoport and Tom Pelissero first reported the news. CNN has reached out to the Raiders for comment.

Less than two weeks after winning a national championship with Ohio State, the former NFL coach is back in the league again. Here's what to know.