Months have passed since the hysteria surrounding NFL free agency subsided, and training camp begins soon. But despite ample time, numerous big-name veterans have yet to find a team for the 2017 season. Some will ink a deal in the coming months, while others could find themselves involuntarily retired by the league.

Jairus Byrd

Age 30, eight seasons

As a member of the Bills, Byrd established himself as one of the premier defensive backs in the NFL. He earned three trips to the Pro Bowl, three second-team All-Pro selections and one first-team All-Pro nod during those five seasons, putting him in rare company among recent safeties. His star rose so fast that Buffalo determined it couldn't afford to retain him. In 2014, Byrd became the free agent available on the open market, eventually signing a record-setting six-year, $56 million contract with the Saints.

Once in New Orleans, Byrd's career quickly flamed out. He played in just four games during his first season and missed multiple games the following year. His availability improved in 2016 when he made every start, but his production -- two interceptions and just three pass breakups -- never matched the numbers he amassed in Buffalo. With a nearly $8 million price tag for the upcoming season, Byrd became a cap casualty shortly before free agency kicked off.

Byrd's recent spate of injuries and performance dip explain why no team has signed him thus far. That could change by the time expected starters go down with injuries.

Best fit: Jacksonville

Tashaun Gipson and Barry Church appear set to start at safety for the Jaguars, but the depth behind them remains a concern. Byrd could reunite with his last head coach in Buffalo, Doug Marrone, while playing a regular role in Jacksonville's defense.

Anquan Boldin

Age 36, 14 seasons

Few wide receivers continue their careers after age 35. Of course, few can will themselves to take the field with a broken face like Boldin did in 2008. Some players possess a special level of toughness that mere mortals cannot fathom.

That toughness has served Boldin well over the years, including 2016 when he joined the Lions days before Week 1 and started every game. Even at his age, Boldin posts up corners with regularity and finds ways to bail out his quarterback. He has also earned a reputation as a great teammate and person, winning the NFL's Man of the Year award following the 2015 season.

Whatever speed he had has largely dissipated. Even so, Boldin knows how to separate from defenders and utilize his strength to remain a weapon, as his 67 catches and team-best eight touchdowns from 2016 attest. Interested teams might wait until the start of the season nears, but he could have another impactful year.

Best fit: Indianapolis

The Colts have yet to develop a second dependable pass catcher to pair with T.Y. Hilton. Quarterback Andrew Luck has never had an apex predator like Boldin working out of the slot, something that could boost Indy's offense immensely.

Colin Kaepernick

Age 29, six seasons

Perhaps the NFL has blackballed Kaepernick. Maybe he possesses a particular skill set that doesn't fit with the teams still seeking an answer under center. Whatever the case, the 49ers' former starter has endured far more free-agency struggles and media scrutiny than most of his quarterback peers this offseason.

For myriad reasons, Kaepernick won't appeal to everyone. Besides the controversy stemming from his decision to kneel during the national anthem, he has enjoyed most of his professional success operating from a run-heavy, power offensive scheme that has fallen out of favor in most NFL cities. Kaepernick saw his play bottom out in 2015 before rebounding somewhat last season. From a football evaluation standpoint, he offers few certainties.

But while the shine has come off Kaepernick's career, he also has established himself as a superior player to the likes of Brandon Weeden, T.J. Yates and Kellen Clemens, all of whom have jobs entering training camp. Eventually, the need for quality quarterbacks should trump whatever objections teams have with Kaepernick.

Best fit: Seattle

The Seahawks brought Kaepernick in for a look back in May but ultimately decided not to pursue a contract. They might have to revisit that decision should backup Trevone Boykin becomes unavailable (multiple arrests this offseason) and Austin Davis performs like the limited quarterback he showed himself to be with the Rams and Browns. Kaepernick makes sense for Seattle's offense and its team culture, and the two parties should still join forces.

Darrelle Revis

Age 31, 10 seasons

Once the undisputed king of the cornerback position, Revis has seen his stock drop precipitously over the past 12 months. He found himself trailing wideouts far too frequently in 2016, leading to backbreaking plays from which the Jets could not recover. The former All-Pro also ran into legal trouble in January, as he arrested and charged with multiple felonies outside of Pittsburgh, although charges were dropped in March. Those factors have allowed Revis to remain on the open market for most of the calendar year.

Perhaps Revis' days patrolling the boundaries are behind him. He could conceivably continue as a starter by transitioning to safety, a concept floated by the Jets over the past few years. The move from corner to safety presents many challenges, but Revis possesses the intelligence and confidence to succeed in such a maneuver.

Furthermore, while Revis' age and diminished athleticism manifested as blown assignments last season, his experience and playmaking skills should garner interest at some point in 2017. In a league where Coty Sensabaugh, Shareece Wright and Chris Conte remain employable, a spot for Revis exists, as well.

Best fit: Houston

Revis has never shortchanged himself on the salary front, which narrows down the pool of landing spots. However, the Texans could use him in their secondary (K.J. Dillon and Andre Hal currently start at safety) as well as the cap space (just under $30 million, according to Over the Cap's numbers). Revis could further his career at a new position and compete for a division title.

Mario Williams

Age 32, 11 seasons

To many Texans fans, Williams entered the league as "not Reggie Bush" rather than the No. 1 overall pick and a premier prospect. The defensive end received fewer college accolades than his Heisman-winning peer from USC, but Houston's decision proved wise. Bush, while an electric athlete, had an up-and-down career while Williams became one of the best pass rushers in the league.

In 11 seasons, Williams has built an impressive résumé. His 97 ½ career sacks rank 34th all time, and he trails only seven active players in that department. Williams' best season came in 2014, when he finished fifth in the league in sacks (14 ½) and earned first-team All-Pro honors.

Williams hasn't looked the same since that season, however. During his final season in Buffalo, Williams struggled to adjust to Rex Ryan's 3-4 defense. He returned to a more familiar scheme last season with the Dolphins but saw even poorer results. Still, in a league constantly searching for capable pass-rushers, Williams' history will garner looks.

Best fit: The couch

Williams' play fell off in 2015 when conditioning and effort issues reduced his sack total by nearly 10 from the previous season. He signed a multiyear deal with the AFC East-rival Dolphins last offseason and delivered just 1 1/2 sacks in 13 games. Williams could reach the 100-career-sack threshold this year, but that doesn't mean he makes sense for a team at this stage of his career.