NFL free agency: Arizona Cardinals could pursue DeMarco Murray

So it appears the Arizona Cardinals are serious about getting a new running back -- and not just any running back. They are connected to Adrian Peterson, and now they are reportedly interested in Dallas Cowboys back DeMarco Murray.

Ian Rapoport reported on NFL Network four teams, among whom the Cardinals are included, have Murray on their radar.

Murray was the league's Offensive Player of the Year in 2014 after leading the NFL with over 1800 rushing yards, which nearly 500 yards more than second place Le'veon Bell. He was the focal point of the Dallas Cowboys offense, carrying the ball over 390 time and catching another 57 passes for over 400 yards.

Murray will be a free agent starting next week if he does not come to terms with Dallas on a new contract.

Murray is 27 years old and played in all 16 games for the first time in his four-year career.

He was reportedly offered $16 million for four years by the Cowboys some time ago.

Murray was by far the best back in football a year ago, but can he maintain the production, especially after his 2014 workload? He also fumbled five times last season.

It is clear Arizona is not content with trying to give Andre Ellington a bell cow workload. Is Murray the answer, and how much is the right price?