Another first-round pick who never quite met the expectations. Alualu was drafted 10th overall by Jacksonville in 2010, and he's got 13 sacks in five seasons. He played all 16 games in 2014 and notched 30 tackles with two sacks as a rotational guy. He could also be signed for a bargain.
Brad Mills-USA TODAY SportsBrad Mills
DT Kevin Williams
Williams just finished losing Super Bowl XLIX, and he turns 35 in August. It's no guarantee he's going to play in 2015, as he might decide to retire. He also might want to remain in Seattle, where he was productive as a role-player after leaving Minnesota. His age would likely make him an affordable signing, and he'd bring a veteran presence with him.
Getty ImagesOtto Greule Jr
DT Stephen Paea
Dallas brought in Melton -- who worked with Marinelli in Chicago -- in 2014 and it produced mixed results. Paea has the same ties, as he played two seasons with the Bears before Marinelli left town. He’s coming off a career-best, 33-tackle, six-sack season in Chicago just in time to hit the open market.
Geoff Burke-USA TODAY SportsGeoff Burke
DE Adrian Clayborn
Another interesting prospect. Clayborn was drafted 20th overall by Tampa in 2011, but injuries have kept him from ever meeting that potential. He missed 13 games in 2012 and 15 games in 2014. That injury history should make him fairly affordable, even though he has first-round talent. That's got "Rod Marinelli reclamation project" written all over it.
Kim Klement-USA TODAY SportsKim Klement
DE Anthony Spencer
Of all the free agents on the Dallas D-Line, Spencer might be the one most worth keeping. He improved dramatically as the season went along, and he continued to recover from microfracture knee surgery. That same surgery, which happened just last year, would very likely make him a cheap signing to stay in Dallas.
Matthew Emmons-USA TODAY SportsMatthew Emmons-USA TODAY Sports
DT Terrance Knighton
The Cowboys quite simply do not value one-technique tackles, who stuff the run, as much as they value three-technique tackles, who rush the passer. That makes it unlikely that Knighton would wind up in Dallas, as he's sure to command good money. He'd certainly be an improvement over the personnel that's been in place here, though.
Getty ImagesDustin Bradford
DT Nick Fairley
This one is intriguing, because Fairley has clear first-round talent, but he hasn't produced at the same level as Suh, his Lions linemate. He recorded 12.5 combined sacks in 2012 and 2013, but he missed most of this past season with an injury. It'll be interesting to see what teams think of him after a disappointing season. If Detroit doesn't bring him back, he could come at a discount price.
DE Jerry Hughes
A first-round bust in Indianapolis, Hughes has caught on in Buffalo, where he's got 19.5 sacks in two seasons. It's a good bet the Bills either re-sign him or franchise tag him, but if not, he'd likely come at a cheaper price than the guys above him. That said, we’re still talking about a lot of money for a team without a lot of cap room to be spending.
Getty ImagesTom Szczerbowski
DE Jason Pierre-Paul
After a couple of forgettable years, Pierre-Paul rediscovered his 2011 form with a 12.5-sack season in 2014. He's not going to get paid as much as Suh, but pass rushers are always at a premium. It's a decent bet he'll command the type of price tag the Cowboys have been avoiding in recent seasons.
Al Bello/Getty Images
DT Ndamukong Suh
Chalk this one up as the longshot of all longshots. Suh's finishing up a $64 million deal, and it's a good bet his next one will make him the highest-paid defender in the game -- which would push him above $100 million. He would do wonders at the all-important three-technique position in Rod Marinelli’s defense, but the price is incredibly steep