That was my initial reaction as well, but the more I considered it, the less appealing the offer became. Basically, the Jets will recoup a third round compensatory pick if they let Revis walk in the offseason. So the trade, on the Jets end, becomes Revis for a one and a six next year. So if Tampa becomes more competitive this season following several key aquisitions, even the one won't likely be a top 20 pick. The six is basically a throwaway. So, is the deal for league's best defensive player really that attractive? Meh. I think Idzik can afford to sit on it a while, and let the Bucs squirm.
The 3rd round compensatory pick we'd get would have otherwise been the #1 pick in round 4. It's only a "3rd round" pick in name because they're adding him to the end of the 3rd round. But absent a 3rd round compensatory pick being awarded in a given year, that overall pick would have been pick 1 in round 4.
Also that compensatory pick isn't until 2015. In terms of trade value (theoretical, since you can't trade a comp pick) the #1 pick in round 4 is worth the #1 pick in round 6 today. And, as others have mentioned, we only get it if we sit on our hands and don't sign a premiere player in 2014 - at a more valuable position than CB - when we'll have plenty more cap space.
A 6th round pick next year is worth (in trade) a 5th round pick in 2015. It is not a throwaway. We got Slauson, 3-year starter on our OL, with a 6th round pick. The (penciled in) starter at safety, Bush, was drafted with a 6th rounder. Joel Dreesen, who we let go of after 1 year, was drafted with a 6th. And these are just some Jets draft picks out of a small sample (since we didn't draft a player in round 6 in two of the past three drafts). It's not nearly as valuable as the 3rd or the 1st, of course, but it is not a throwaway.