General manager Martin Mayhew never stops tinkering with the Lions’ roster.

On Wednesday Detroit acquired defensive end Lawrence Jackson, a first-round pick in 2008, in a trade with Seattle, according to the Everett (Wash.) Herald. The Lions will give up an undisclosed draft pick in 2011.

Jackson would not fit in Seahawks’ coach Pete Carroll’s defense.

ProFootballTalk.com reports that Jackson, who attended USC, was knocked coming out of the draft as someone who had inconsistent effort, and he hasn't beaten that wrap with only seven sacks in two seasons.

Detroit is becoming Seattle East with several former Seahawks on the roster including WR Nate Burleson, LB Julian Peterson and LG Rob Sims.

(Follow me on Twitter @paulapasche.)