Arizona Cardinals complete eight-man practice squad
Demens played in all four preseason games with the Cardinals before being cut last week.
McCloud, a 6-foot-2, 313-pound Florida State product, spent the preseason with the Minnesota Vikings.
McGuffie started his collegiate career at the University of Michigan before transferring to Rice for his final three seasons. After college he signed as an undrafted free agent with the Oakland Raiders.
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