Seymour, a five-time Pro-Bowler and a three-time first-team All-Pro is coming off a 2008 campaign in which he tied a career high with eight sacks.This is the second trade between the Raiders and Patriots involving a defensive lineman in the past month, as Oakland sent pass-rushing end Derrick Burgess to New England in early August. It appears to be a rather good move for the Raiders in the short-term -- and a very, very questionable one for the long-term -- as Seymour instantly becomes their best defensive lineman this season, and they pick him up without having to surrender their 2010 first-round pick (likely to be a high one). The problem, of course, is that he's scheduled to be a free agent following this season. If he doesn't sign, that's a steep price to pay for one year of a defensive lineman that's not likely to be the difference between a playoff season and a non-playoff season.The Patriots, meanwhile, continue their trend of stockpiling future draft picks (on Saturday, the Patriots dealt fourth-year tight end David Thomas to New Orleans for a 2011 draft pick.) It also creates some long-term holes on the defensive line, seeing as how nose tackle Vince Wilfork is scheduled to become an unrestricted free agent following this season.New England will be filling Seymour's roster spot with offensive lineman Kendall Simmons, according to Schefter.