Darren McFadden will test free agency this offseason.

"Darren's going to be a free agent and there's been communication with his agent," McKenzie said, per ESPN.com. "He's going to see what his market is. And that's the thing, when you're talking about the games that he's missed, he has no idea -- and when I say 'He,' I'm talking about his agent -- he has no idea what his market value will be and I couldn't tell you what the other 31 teams think."

McFadden has spent his entire six-year career with the Oakland Raiders, where he has been largely productive when healthy. McFadden rushed for just 3.3 yards per carry in 2013, his second straight mediocre season.

The Oakland Raiders would like to keep Rashad Jennings.