The Seattle Seahawks have locked up safety Earl Thomas to a massive long-term contract extension, NFL Media’s Ian Rapoport reported Monday.

Thomas, Seattle’s 2010 first-round draft pick, agreed to a four-year deal that will make him the highest-paid safety in the game “by a wide margin,” a source told CBS Sports’ Jason La Canfora.

According to Rapoport, Thomas’ new deal is worth $40 million with $27.725 million guaranteed. Thomas was set to make $4.625 million in 2014 on the last year of his rookie contract and would have been an unrestricted free agent following the season.

Thomas, who turns 25 on May 7, has 15 career interceptions, five forced fumbles and 32 pass breakups in his four-year NFL career.

Next up for the Seahawks, La Canfora reported, is a huge deal for cornerback Richard Sherman.

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