Vikings head coach Mike Zimmer believes Cook's "foot quickness" and "acceleration" have returned to normal, Matt Barrows of The Athletic reports.

During a conference call with San Francisco media members Wednesday, Zimmer spoke about the recovery of his No. 1 running back from a torn ACL, adding, "I think he's ready to roll." The positive outlook is encouraging, but Cook has only carried the rock two times (both in the third week of the preseason) since suffering the injury that ended his rookie campaign in Week 4 of 2017. Cook himself talked to the media Wednesday and hinted that fellow backs Latavius Murray and Mike Boone could be a part of game plans early this season, but the second-year player should serve as the workhorse in due time.