One reliable trend in nearly 30 years of NFL free agency is that teams better not go into it looking for a franchise quarterback.
QBs who hit the market are almost always too old, coming off injury, irreparably flawed or, in Kirk Cousins' case, significantly overpaid. Sometimes there's a Peyton Manning or Drew Brees who beat the odds coming off a major injury, but good luck investing in those lottery tickets.
This year is no different. The unrestricted free agents are either backups or gambles, and sometimes both. But there's extra intrigue due to the trade market.