Seattle reached an agreement on a five-year contract with cornerback Kelly Jennings on Sunday.
Jennings will receive $5 million in guarantees and the contract has a maximum value of $9.7 million.
He is expected to sign late Sunday.
Jennings, Seattle's first-round pick (No. 31 overall) out of the University of Miami, had one of the fastest 40-yard dash times (4.37) at the NFL scouting combine.
He is expected to compete for a starting job.
With the signing of Jennings, there are six first-round picks who remain unsigned.