It looks like the Seattle Seahawks will add a key veteran to its defensive line.
Allen has visited the Seahawks twice during free agency.
After spending his first four NFL seasons with Kansas City, Allen was traded to the Vikings for a first-round pick.
His career flourished in Minnesota, with Allen earning four of his five Pro Bowl honors with the Vikings.
In his career, Allen has recorded 554 combined tackles, 128.5 sacks, 29 forced fumbles and 17 fumble recoveries.
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Aaron Wilson covers the Ravens for The Baltimore Sun.