The Raiders have signed 33-year old DE/OLB Greg Ellis to a 3-year contract.  Ellis played in all 16 games for the Cowboys last season and he made 36 tackles, defensed 1 pass, had 8 sacks and 1 interception.  Ellis has now played in 162 games in his 11-year NFL career and he has made 496 tackles, has defensed 46 passes, has 77 sacks, forced 21 fumbles and he has 4 interceptions (one returned for a TD).  Ellis will likely move back to DE for the Raiders this season and he should improve their pass rush.