Like Idzik, Thomas' focus will be on the salary cap and contract negotiations, which was also his area of expertise over the last three years in Cleveland.
"Matt is a well-respected salary cap expert and was recommended by many top-ranking NFL executives," Seahawks general manager John Schneider said in a release. "I am excited to welcome him to our football family."
Thomas, who has a law degree from NYU, began his career with the Miami Dolphins in 1998 and spent 12 seasons with the club, spending 2009 as vice president/general counsel & football administration. He then spent three years as the Browns' Senior VP of Football Administration.
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