NY will receive wide receiver Jermaine Kearse and a second-round draft pick.
Richardson, 26, was often embroiled in controversy during his four-year tenure with the Jets.
Sheldon Richardson's tumultuous tenure with the New York Jets is over.
The Jets also receive Seattle's 2018 second-round draft pick and the teams are swapping seventh-round picks, a source told ESPN. Seeming nearly forgotten is a catch that was no less important - a 35-yard touchdown on fourth-and-seven that put Seattle ahead for good against the 49ers in the 2014 NFC title game.
One year later, he earned his only Pro Bowl invitation to date after recording eight sacks and setting the pace for a NY defensive line that was especially stingy to opposing ballcarriers. Richardson has spent his entire career with the Jets after being picked in the first-round pick in 2013 and was a Pro Bowl selection after the 2014 season, when he recorded a career-high eight sacks.
West Indies stun England
West Indies win would have been even more emphatic had they not dropped several catches which amounted to a total of 238 runs. West Indies , hopeful at tea of pushing for a first test victory in England since 2000, was completely demoralized at stumps.
Kearse, 27, has been a starter for the Seahawks since 2014 but is coming off a down season in which he caught 41 passes for 510 yards and one touchdown.
Kearse fills a major need for the Jets after losing Brandon Marshall and Devin Smith during the offseason. He was named the league's defensive rookie of the year after making 42 tackles alongside 3.5 sacks that fall.
The former first-round pick also had his issues off the field, including a failed drug test that resulted in him being suspended for the first four games of the 2015 season.
The Jets are in the midst of a massive rebuilding project that has seen them cut tens of millions of dollars off their payroll.
Instead, the Seahawks saw their final offensive play result in an interception at the goal line and a 28-24 loss.