The Denver Broncos have signed running back Willis McGahee to a three-year deal worth $7.5 million, including $3 million guaranteed, according to multiple sources.McGahee, 29, who was released from the Baltimore Ravens, had career lows with 100 rushing attempts for 380 yards in 2010.According to the Baltimore Sun, McGahee and his agent, Drew Rosenhaus, have eyed Denver as a team where McGahee could become a starter. The Broncos are unhappy with third-year running back Knowshon Moreno, who rushed 182 times for 779 yards and five touchdowns last season. The Broncos' second top runner was reserve quarterback Tim Tebow.McGahee, a nine-year veteran, was drafted from the University of Miami by the Buffalo Bills in 2003 with the 23rd pick. McGahee played for the Buffalo Bills for four seasons (2003-2006) and then for the Ravens for the past four seasons (2007-2010). McGahee has rushed for 6,167 yards with 59 touchdowns in his career. Please refresh this page for more information.