There seems to be something of a game of chicken going on with regard to potential quarterback trades. Everyone seems to agree that this is a weak draft class for quarterbacks, and the only legitimate 1st rounder is Geno Smith. (Though probably one or two others will go in the first round, because there are so many QB-needy teams.) Additionally, there aren't many great options in free agency this year.
Two quarterbacks who could potentially at least compete for a starting job somewhere, if their current teams either trade or release them, are Alex Smith and Matt Flynn. Both SF and Seattle respectively sound willing to trade if they get the right offer. Or possibly even cut Smith or Flynn if they can't get anything for them, simply because it doesn't make much financial sense to be paying someone starting QB money if they're firmly entrenched in the backup role. It seems like most of their potential trade partners are playing hard to get though, acting as if they're not that interested, in the hopes that the players will just be cut, and they can sign them without giving up any draft picks.
Or at least, it might be an act. I'm not sure. I mean, can the new Jaguars coach really think this highly of Blaine Gabbert, even though he's been awful?
Another issue is that one of the QB-neediest teams is Arizona, which is in the same division as both SF and Seattle, and neither team is likely to want to trade a QB to their division rival. That may be why Arizona may instead sign Drew Stanton, and use him as insurance if Kevin Kolb doesn't work out: