Presuming this rumor has any substance, it really depends on what Houston throws into the deal. If Houston includes Lane in the mix, well, that clears up the situation. The primary benefit I can see is that Huff is a lefty and adds more balance. For the D'Rays, they get a comparable player, who can also play 1B, in Lane, with a far better price tag. I don't see Tampa having any interest in Willy as they already have their own version in Gathright along with Baldelli and Crawford.
Or, if Houston is throwing in pitching, I assume it would either be Zeke, Wandy, or Qualls. At which point, as someone mentioned, Lane or Willy could be packaged for some pitching, if necessary.
Or, it could be a package of players and Houston could have to deal with having too many decent hitters on the bench, oh the horror!
edited to add:
I don't know how much substance there is to this rumor but I read the article on Huff earlier today and figured there would be rumors starting. Huff hasn't been a happy camper since before last season. His performance dropped off significantly last season and while it's been too long to find the articles I read at the time, I suspect Huff was pushing for a trade last season.