Ihedigbo made the Jets in 2009 as a backup safety.
He was used as a backup safety and special teams player in his first two seasons.
Last year, Cox was a backup strong safety for the San Francisco 49ers.
He re-signed with the Jets midway through the 1995 season as a backup safety.
"We're going to have to get a corner and a backup safety, so this might give us the extra player."
Green functioned as a backup safety and cornerback during the 2007 season.
In his first three seasons with the team he was a backup safety and special teams contributor.
They won it with backup safeties inserted late in the game when both starters left injured.
Percy Ellsworth, the backup free safety, had that second opportunity, but he was blocked off.