McCann played in the final six games last season and had two special teams tackles for the Cardinals, who announced the move Monday. The team did not disclose financial terms.
McCann re-signed with the Cardinals last Nov. 19 after spending the offseason and training camp with Arizona.
He signed with Dallas as an undrafted free agent out of SMU in 2010 and had a 101-yard interception return and a 97-yard punt return - both for touchdowns - as a rookie. McCann has also played for Baltimore and Oakland.
In 35 NFL games, McCann has 29 tackles on defense, one sack, one interception and nine special teams tackles.
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