Randall played cornerback for his first three seasons with the Green Bay Packers, who drafted him 30th overall in 2015. He has also played safety and some nickelback.
Most of Randall's 35 defensive snaps last season came at safety. He appeared in 10 games with the Seahawks -- mostly on special teams -- after joining their practice squad in September.
It's not clear if the Seahawks see Randall as an option at nickelback or on the outside.
At 5-foot-11 and 196 pounds, the 28-year-old is smaller than what the Seahawks typically prefer in their perimeter cornerbacks. But D.J. Reed emerged for Seattle on the outside last season despite not having prototypical size.
The Seahawks' other perimeter cornerbacks include free-agent addition Ahkello Witherspoon and Tre Flowers, who has started 37 games for Seattle over the past three seasons. Safety Ryan Neal has played cornerback in the past. Ugo Amadi and Marquise Blair are returning at nickelback, although Blair is coming off a torn ACL.
Randall has 14 interceptions and 47 passes defensed over six NFL seasons. He spent three with Green Bay and two with the Cleveland Browns before landing in Seattle last year.