Humphrey played in seven games, mainly on special teams, last season with the Packers. His season came to an end on Nov. 12 when he sustained a torn hamstring against the Vikings and placed on injured reserve three days later.
Humphrey had five special teams tackles last season. He has yet to catch a pass in eight games for the Packers since he was signed to the team's practice squad in 2005.
As an exclusive rights free agent, Humphrey was unable to negotiate with any other National Football League team. The Packers own his rights and likely made him the minimum qualifying offer of a one-year, $435,000 contract.
Smith chooses Cardinals
Terrelle Smith, who met with the Packers on Tuesday in Green Bay, opted to sign a two-year deal with the Arizona Cardinals.
Smith, 29, has played seven seasons in the NFL and appeared in all 16 games last season for the Cleveland Browns. He spent four seasons with the New Orleans Saints before signing with the Browns as a free agent in 2004. Primarily a blocking back, he has 182 yards rushing on 57 carries and 271 yards and four touchdowns on 58 receptions.