The Raiders are "expected to pursue" Broncos free-agent defensive tackle Terrance Knighton, according to a report from the Denver Post.
Knighton, 28, is also already quite familiar with Oakland's new head coach Jack Del Rio.
Del Rio drafted Knighton in the third round out of Temple in 2009 when he was the head coach of the Jacksonville Jaguars.
The wide-bodied lineman started 49 of 61 games played for the Jags from 2009-2012, registering 140 tackles and 7.5 sacks.
Once a free agent after the 2012 season, Knighton then followed Del Rio to Denver, where they worked closer together on the defensive side over the past two seasons from 2013-14.
Knighton strengthened the defensive front, recording five sacks in his two years with the Broncos.
The 6-foot-3, 331-pounder would not rule out a reunion with Del Rio, either, telling the Associated Press, "I want to be wherever Jack is. I'll just leave it at that."
Alongside Detroit Lions All-Pro Ndamukong Suh, Knighton projects to be one of the most coveted defensive tackles in free agency.
Oakland will have roughly $52 million in available cap space this offseason, which is the second-most behind the Jaguars, per OverTheCap.