Coleman and Vainuku are being brought in to fill a void at the fullback position and to compete for the starting fullback spot. Coleman was signed by the Minnesota Vikings following the 2012 NFL Draft. He was signed by the Seattle Seahawks in December of 2012. Coleman played in 31 games with seven starts for the Seahawks and has 11 career receptions for 91 yards with two receiving touchdowns. He also has 10 career rushing attempts for 35 yards.
Thornton was selected by the Indianapolis Colts in the third round of the 2013 draft out of Illinois. The former Fighting Illini played in 37 games for the Colts, with 32 starts.