John Henderson to be Released?

Steve Corkran tweets that DT John Henderson is scheduled to make 4 million dollars and that the Raiders may cut him.

After being a regular for the Jacksonville Jaguars, Henderson has been disappointing as a Raider, starting in just 5 games (playing in 22) with 48 tackles and no sacks in 2010-2011. He averaged over 3 and half sacks with the Jaguars. Henderson is 33 years old, and Pro-Football Reference says one of his most comparable players is Tony Siragusa. The 2 time pro-bowler is listed at 328 pounds.