NFL free agency opens just one month from now, and it could be one of the most hectic yet.

With the salary cap projected by some to jump as much as 10 percent and penny-pinching teams such as the Jets required by the labor agreement to start spending, veterans could be poised to cash in this spring.

Whether the most prominent names eligible for free agency even reach the open market without getting the franchise tag remains to be seen, but plenty of talent — everywhere but quarterback — is expected to be there for the taking.

And the list of attractive pieces could grow depending on what their current teams decide to do with Darrelle Revis, Percy Harvin and Jay Cutler.

Here’s a ranking of the top 25 free agents — regardless of their chances of being tagged — as of Monday.

1. Justin Houston

OLB

Age: 26

Chiefs

Houston was a Pro Bowl pick and a solid player his first three seasons before putting it all together in incredible fashion in 2014 by leading the NFL with 22 sacks. It was perfectly timed, too, as he was in the final year of his contract. Look for him to get the franchise tag, though, because it would be shocking if the Chiefs let a top-notch pass rusher reach the open market.

Destination: Chiefs

2. Ndamukong Suh

DT

Age: 28

Lions

He’s the best defensive tackle in football and worth the headaches that come with his occasional, uh, anger-management issues. Suh reportedly told friends during the season he wants to sign with one of the New York teams, but the Lions have indicated recently they will use the franchise tag — smartly, at least from here — to keep a lineman with 36 sacks in five seasons under contract.

Destination: Lions

3. Dez Bryant

WR

Age: 26

Cowboys

Bryant just keeps getting better and better on the field, and his maturity problems off the field seem to have abated. There’s no way Jerry Jones lets his talented wideout walk after all the Dallas owner has invested in him, even if keeping Bryant with the franchise tag costs Jones the reigning NFL Offensive Player of the Year in running back DeMarco Murray.

Destination: Cowboys

4. Demaryius Thomas

WR

Age: 27

Broncos

Thomas probably wouldn’t want to return to Denver if Peyton Manning retires, but the Broncos likely won’t give him the choice. Thomas is an ideal candidate for the franchise tag after recording three consecutive seasons with at least 1,400 receiving yards and 10 touchdowns.

Destination: Broncos

5. Devin McCourty

FS

Age: 27

Patriots

The Rutgers product took a backseat to Darrelle Revis last season for the reigning Super Bowl champs when it came to the secondary, but McCourty is considered a big part of the Patriots’ defensive foundation and could end up getting the franchise tag. It seems more likely he walks, though, if New England — as expected — decides to make a big push to keep Revis.

Destination: Jaguars

6. Greg Hardy

DE

Age: 26

Panthers

Hardy’s situation is a perplexing one. He’s young and one of the best pass rushers in the game, but Hardy also sat out the 2014 season because of a domestic-violence case that was dismissed Monday. He has yet to be reinstated by NFL commissioner Roger Goodell. Carolina won’t be swimming in salary-cap space but will make as good of a push as it can to keep him.

Destination: Panthers

7. Jason Pierre-Paul

DE

Age: 25

Giants

Pierre-Paul made a strong late push and finished with 12.5 sacks, but the Giants have to wonder if it was truly a return to form considering the bulk of his production came against bad teams when they already were out of contention. Is JPP worth the franchise tag based on basically one good month of rushing the passer?

Destination: Raiders

8. DeMarco Murray

RB

Age: 26

Cowboys

You don’t usually see the NFL’s Offensive Player of the Year hit the open market, but that could be the case here with Dallas likely having to choose between keeping Murray or Dez Bryant. Running back is a position that has lost its luster in free agency, but the demand for someone coming off an 1,845-yard rushing season — especially with four years left before turning 30 — probably will be strong.

Destination: Titans

9. Julius Thomas

TE

Age: 26

Broncos

Denver has 20 free agents, many prominent, and is expected to use the franchise tag on wide receiver Demaryius Thomas. That means Julius Thomas probably will be there for the taking. He’s a bit of an injury concern (limited to just 13 games last season), but still caught 12 TDs in 2014 and is a big, attractive target.

Destination: Browns

10. Randall Cobb

WR

Age: 24

Packers

Cobb has really developed into a quality receiver and made a terrific contract run with 91 catches for 1,287 yards and 12 TDs in his walk year. The Packers have a lot of cap space, but there are a lot of teams that will be interested in a speedy, 24-year-old playmaker.

Destination: Seahawks

11. Jeremy Maclin

WR

Age: 26

Eagles

He’s a perfect fit for Chip Kelly’s offense, as well as a perfect fit for the franchise tag.

Destination: Eagles

12. Pernell McPhee

OLB

Age: 26

Ravens

McPhee is coming off a career-best 7.5-sack season, but interest probably will be limited to teams that run a 3-4 defensive scheme.

Destination: Titans

13. Nick Fairley

DT

Age: 27

Lions

Extremely talented head case probably will get to hit the market with Detroit preoccupied with keeping Suh.

Destination: Raiders

14. Mike Iupati

G

Age: 27

49ers

Iupati is a perennial Pro Bowl pick and the best interior lineman available, while San Francisco is mired in cap problems that probably will keep the Niners from franchising him.

Destination: Jets

15. Jerry Hughes

DE

Age: 26

Bills

Hughes is young, aggressive and coming off back-to-back seasons of 10 or more sacks. Sounds like the kind of player Rex Ryan will work hard to keep.

Destination: Bills

16. Jason Worilds

OLB

Age: 26

Steelers

He’s a young, on-the-rise playmaker who is probably going to be too rich for a Steelers team beset by cap woes.

Destination: Jets

17. Byron Maxwell

CB

Age: 26

Seahawks

Seattle has more pressing priorities, so Maxwell looks likely to hit the open market. But is he any good or just a product of playing opposite Richard Sherman?

Destination: Falcons

18. Bryan Bulaga

OT

Age: 25

Packers

Quality tackles are obviously hard to come by, which means Green Bay is the favorite to keep Bulaga despite his injury problems.

Destination: Packers

19. Rodney Hudson

C

Age: 25

Chiefs

A potential anchor who’s still in the prime of his career, Hudson also is a prime candidate to change teams with the Chiefs in dire cap straits.

Destination: Chargers

20. Brandon Flowers

CB

Age: 28

Chargers

Flowers was very good in his lone season with San Diego in 2014, recording three interceptions, and the Chargers are in decent cap shape.

Destination: Chargers

21. Terrance Knighton

DT

Age: 28

Broncos

He’s a tremendously disruptive interior lineman who will probably be too expensive for Denver to keep. Don’t be surprised if he reunites with Jack Del Rio in Oakland.

Destination: Raiders

22. Jordan Cameron

TE

Age: 26

Browns

If he can show he is healthy after an injury-riddled 2014, Cameron would be a quality addition for any offense.

Destination: Giants

23. Justin Forsett

RB

Age: 29

Ravens

This former backup came out of nowhere to rush for 1,266 yards in place of Ray Rice, and the Ravens’ cap problems mean they will be hard-pressed to keep him.

Destination: Jaguars

24. Doug Free

OT

Age: 31

Cowboys

Free’s age is a concern, but he is a reliable and quality right tackle who will be in demand.

Destination: Jaguars

25. Torrey Smith

WR

Age: 26

Ravens

Smith only caught 49 passes last season but emerged as one of the NFL’s best deep threats and hauled in 11 TDs.

Destination: Ravens