Bell was the focal point of the Spartans' offense this season, rushing for 1,793 yards and 12 touchdowns. The 6-foot-2, 237-pounder is rated as the No. 2 running back in the draft by ESPN's Scouts Inc. and the 81st-ranked player overall.
Bell will be joined by Spartans tight end Dion Sims in the draft, according to a source close to the player.
Sims, who had 36 catches for 475 yards and two touchdowns as a junior, is rated the No. 4 tight end by ESPN's Scouts Inc. and the 77th-ranked player.
According to sources, the Spartans also are anticipating the departure of defensive end William Gholston, whose mom told the Detroit Free Press that Gholston will be making his decision in the next few days.
Information from ESPN.com's Adam Rittenberg was used in this report.