The first domino to fall in that secondary market could be Vince Young, the two-time Pro Bowl quarterback who was with the Philadelphia Eagles last season.
Young, who turns 29 later this month, visited the Buffalo Bills today and could possibly fill in as a backup to starter Ryan Fitzpatrick.
Young could contribute for the Bills as a both the backup quarterback and as a part of the wildcat offense where his ability to run and throw could be better utilized.
He has not announced any other visits, but the Cleveland Browns, Jacksonville Jaguars, Seattle Seahawks and Minnesota Vikings are all could be looking for a quarterback to compete for a starting job, which could be more appealing to Young than a place like Buffalo.
But, in Buffalo he has a chance to become part of a spread offense that will highlight his skills. He will also get the chance to back up a gritty quarterback who's propensity to run the football exposes him to some huge hits over the course of the season. Though none has ended in a major injury for Fitzpatrick so far, the injury bug could strike the Bills starter at any moment.
The Bills would be enamored of Young for the same reasons they like Fitzpatrick. Head coach Chan Gailey loves quarterbacks that can move and make plays with their feet. Young still has that ability, and in Gailey's offense he may get a chance to use it in ways he hasn't since college.
Young was drafted third overall in 2006 and has had a mercurial career since. He was named the 2006 NFL Rookie of the Year, and led the Tennessee Titans to a playoff berth in 2007.
But a 2008 knee injury cost him his starting job with the Titans and a disintegrating relationship with Titans head coach Jeff Fisher saw Young fall out of favor with the team and media. He was released after the 2010 season.
Philadelphia brought him in to back up Michael Vick last year and he was serviceable in seven games, including three as a starter, but questions about his mental commitment and ability continued to dog him with the Eagles.
Now, Young's best chance to make an NFL roster might be as a backup, despite his 31-19 career record as a starting quarterback, his two Pro Bowls, and 13 game winning drives. Young's desire is to start, but he knows that might not be an option.
Sure, I'd like to [start]. Everybody feels that way, Young told the Nashville Tennessean while participating at a charity basketball game. But all I can do is come in and compete. It is like I am getting drafted all over again. You go in and compete and let the coaches and front office people make that decision.
If the Bills did bring in Young it would cap what might be the splashiest offseason in their history. They have already made Mario Williams the highest paid defensive player ever with a six-year $100 million contract as well as adding Mark Anderson on the defensive line.
During the season they locked up Ryan Fitzpatrick, and Stevie Johnson to major extensions. With all of the additions, the Bills appear poised to end their 12-year playoff drought, the longest active streak in the NFL.
Young might not be the piece that pushes them over the top, but he certainly will help.