Remi Ayodele played relatively well in relief of Kendrick Clancy this season.
Jarvis Green, DE/DT, Broncos. Age: 31.
Jarvis Green is a capable starter in the 3-4 and could be a great backup. However, the Patriots could use an upgrade at the position.
Clifton Ryan (ERFA), DT, Rams. Age: 26. Re-signed with Rams (1 year, $1.6 million)
Clifton Ryan is decent against the run, but offers absolutely no pass rush.
Louis Leonard, NT, Panthers. Age: 26.
Louis Leonard, at 330 pounds, was Carolina's starting nose tackle before breaking his ankle in Week 2.
Jason Ferguson, NT, Dolphins. Age: 35. Re-signed with Dolphins
Jason Ferguson is a 35-year-old nose tackle who is coming off a nasty torn quad. Ferguson hinted that he's thinking about retirement, as he won't be healthy until the summer at the very earliest.
Tank Johnson, DT, Bengals. Age: 28. Re-signed with Bengals (4 years)
A decent rotational defensive tackle. NFL GMs beware, don't lowball Tank Johnson; you don't want to insult a man with thousands of guns.
Chris Hovan, DT, Buccaneers. Age: 32. Signed with Rams
Chris Hovan really struggled last year, as perhaps age caught up to him. He can be a solid rotational guy, but should not be a starter anymore.
Jimmy Kennedy, DT, Vikings. Age: 31. Re-signed with Vikings (2 years, $6 million)
Jimmy Kennedy was solid rotational lineman for the Vikings, though you have to wonder if he was just playing for a contract.
Daniel Muir (RFA), DT, Colts. Age: 26. Re-signed with Colts (1 year, $1.7 million)
Started the second half of the season and did a decent job against the run.
Hollis Thomas, NT, Panthers. Age: 36.
Hollis Thomas, at 36, shockingly played well for the Panthers this year. He's a solid backup nose tackle.
Travis Kirschke, DE/DT, Steelers. Age: 35.
Travis Kirschke will be 36 on Sept. 6, but he's still a quality rotational 3-4 lineman who excels against the run.
Fred Robbins, DT, Giants. Age: 33. Signed with Rams (3 years, $12 million)
Fred Robbins lost his starting job in the middle of the season. He's a solid rotational guy at best right now.
Ed Johnson, DT, Colts. Age: 26. Signed with Panthers (1 year)
There's no questioning Ed Johnson's talent. However, he has played in only five games in the past two seasons because of a marijuana arrest and weight issues. If the motivation is there, he can be a good addition.