Spikes has 969 tackles, 22 1/2 sacks,15 fumble recoveries and 12 interceptions in 10 NFL seasons with Cincinnati, Buffalo and Philadelphia. He was all-pro in 2003 and 2004.
The 31-year-old Spikes played one season for the Eagles, who released him in March.
Spikes was drafted in 1998 by the Bengals.
Duggar sisters unveil Christian dating rules in new book
McPhee, Cokas 'working on their marriage' after affair