Cooper and the Raiders have been in contact for the past several weeks and a deal between the two sides would make sense for several reasons. Cooper would provide Oakland with a veteran back-up to safeties Michael Huff and Stuart Schweigert, and he would also make an immediate impact on special teams.
"There's always options to look at," Raiders coach Lane Kiffin said. "We have a number of guys who can do a bunch of things on defense. There's a number of options to look at besides it being a one-for-one move."
The only other safety on Oakland's roster is second-year player Hiram Eugene, who has played sparingly on defense this year. Kiffin said the team could also move cornerback Chris Carr over to safety in an emergency.
The Raiders did sign wide receiver P.K. Sam to the practice squad.