ESPN's John Clayton recently wrote about the 10 worst contracts in the NFL.

Chris Johnson, who signed a six-year, $80.96 million contract, ranks first ahead of Michael Vick, Mark Sanchez, Kevin Kolb and Matt Cassel.

Vick is owed $47.5 million between 2013 and 2015, but the Eagles may part ways with him if Andy Reid isn't retained.

Rounding out the top-10 are DeAngelo Williams, Tyron Jackson, Will Smith, Doug Free and Carson Palmer.

For the Raiders, Clayton rates Palmer's contract as one of the worst due to the first and second round picks the team used to acquire him from the Bengals.