Dejan is reporting that Jack Wilson has been traded to Seattle: http://community.post-gazette.com/blogs/pbc/archive/2009/07/29/pirates-trade-to.aspx
No word on the return, but Dejan said details will follow. The Mariners have a few decent prospects in their system, including some low-level players, so it will be interesting to see what we get back.
I have to assume that Sanchez is close behind, with San Francisco as the most logical destination.
UPDATE: On Twitter, Dejan is reporting that its Jack Wilson and Ian Snell for Jeff Clement, Ronny Cedeno, Aaron Pribanic, Brett Lorin and Nathan Adcock.