The cornerback market is starting to shrink rapidly. The latest news: Keenan Lewis and Cary Williams have signed with the New Orleans Saints and Philadelphia Eagles respectively. Lewis was reportedly a possible target for the Buccaneers after leading the Steelers in passes defensed. He's not a top-notch cornerback, but he's pretty solid and the Saints gave him a five-year, $26 million deal with $10.5 million in guaranteed. That's one of the stronger deals for cornerbacks so far, with slightly over $5 million per year.

Meanwhile, the Ravens' Cary Williams has signed with the Eagles. Williams got a lot of hype after playing some solid football down the stretch, but that quality play was an exception, not the rule for his career. Still, he got a three-year, $17 million deal with $10.5 million guaranteed, according to Adam Schefter.

Two big names at cornerback are now left on the market: Brent Grimes, and Nnamdi Asomugha. And neither of them is a solid option. Grimes was great before his injury, but he's coming off an Achilles injury -- and that is a scary injury, especially for a cornerback. Meanwhile, I wrote about Nnamdi Asomugh earlier. Long story short: he has played absolutely terrible football the past two years. If you sign him, you're signing him as a flier to see if maybe he can get back to his previous level of play.

That leaves the Bucs with very few options. They're trying to re-sign E.J. Biggers, which is likely to happen, but he's not someone you want as a starter. They do still have Eric Wright, but he's likely to be released in the end. That leaves the draft as a source for starters. And, of course, Revis -- a trade that seems more likely by the minute.