Draughn went undrafted in 2011 and was signed by the Washington Redskins before heading to the Kansas City Chiefs. He has also spent time with the Baltimore Ravens, Indianapolis Colts, Chicago Bears, San Diego Chargers, and Browns.
Draughn, who played college football at North Carolina, has rushed for 264 yards and two touchdowns during his NFL career.
More San Francisco 49ers News
Anthony "Spice" Adams to announce 49ers' draft picks in 2nd and 3rd rounds George Kittle's message to Brandon Aiyuk amid contract talks with 49ers: "Be patient" Report: Several teams inquiring about 49ers' Deebo Samuel and Brandon Aiyuk Rapoport: Brandon Aiyuk's status 'firmly up in the air' as 49ers near draft