The Tampa Bay Buccaneers are willing to trade Vincent Jackson, for the right offer, and we have the first rumored candidate: Kansas City. Don't worry, it's not a rumor with a lot of substance. It seems to be based on this NFL.comarticle, which just suggests the trade as a possibility, nothing more than that.
It's always fun when someone saying "this might make some sense" turns into a genuine rumor.
Why this rumor makes sense
The Chiefs could use a good wide receiver, and the Bucs could use some draft picks. Vincent Jackson isn't on the trade block per se, but the Bucs will listen to any good receiver. The Bucs' season is as good as over, so giving up their top offensive weapon won't make a huge difference over the long term, while the Chiefs could push themselves into the playoffs with an extra passing game weapon.
Why this rumor doesn't make sense
The Chiefs don't have the cap space to take on Vincent Jackson's contract. They have $4 million n space left this season, per Over The Cap, which is basically exactly what taking on Jackson's contract would cost them this year. And he doesn't get any cheaper in the near future. They simply can't afford him.
Moreover, the Chiefs are likely unwilling to give up a third-round pick or more Vincent Jackson, given that they need all the picks they can find to alleviate cap problems over the next couple of season. The Bucs won't give up Jackson without getting a sizable haul in return.