The NFL Network’s Albert Breer, who first reported the deal, added on Twitter that Avril was traveling to Seattle on Wednesday evening to sign with the team. The Seattle Times also confirmed the deal.

ESPN’s Adam Schefter reported Avril and the Seahawks have agreed to a two-year, $15 million contract.

Avril has been playing for the Detroit Lions for the past five years, and has been the Lions’ best pass-rusher since his second year in the league. A third-round pick out of Purdue in the 2008 NFL Draft, Avril had 39.5 sacks, 16 forced fumbles and 168 total tackles for the Lions. He tallied 8.5 sacks in 2010, finished 2011 with a whopping 11, and in 2012 had 9.5 sacks as the Lion’s franchise-designated player.

Avril, 26, was considered one of the top pass-rushers in free-agency this offseason, along with Baltimore’s Paul Kruger. On Tuesday, Kruger signed a five-year, $40 million contract with the Browns.