The veteran running back signed with Minnesota in March, disclosing at the time that he would need ankle surgery. He spent all of the offseason program rehabbing and was placed on the Active/PUP list when veterans reported to training camp.
Murray has a lot of ground to make up on Cook at this point. It's looking more and more that Cook will line up as the starter in Week 1. The Vikings had a lot of problems running the ball last year, but signed tackles Riley Reiff and Mike Remmers and drafted center Pat Elflein (3rd round) and guard Danny Isidora in an effort to rebuild the offensive line. Cook has had a good spring and Murray, at this point, is likely in a RB by committee at best.