Cook will be a three-down back, but they need a reliable third-down option, the tweet went on to say. That could be Ham, especially if the rookie Mattison isn't up to speed by the time the season starts.
MIN RB Alexander Mattison - Week 7 Fantasy Football Outlook
Week 7 at Detroit Lions
Alexander Mattison actually led Minnesota in rushing last week, carrying the ball 14 times for 63 yards. He's now had 50+ yards three times this season, and even had a game of 49 yards. He's been more involved than most expected, but he's still not an entirely reliable option as Dalvin Cook's backup. He does get a great matchup this week against Detroit, but it's hard to start someone who can get 14 touches one week and three the next.