Recent rumors indicate Melky Cabrera may go back on the trade block. Would the Cubs still be interested? You have to believe so since they still haven't filled the centerfield job. Cabrera is still pretty young and wouldn't cost the cubs a lot in terms of salary, and still has a lot of potential upside.
If these rumors are true that would add Cabrera back to the list of possible centerfield options to be acquired via trade along with Jacoby Ellsbury and David Dejesus who have been mentioned a lot recently. This could help the cubs a little in terms of leverage depending on whatever avenue they decide to take. Jacoby Ellsbury would be the best option but would definitely cost the cubs dearly in terms of prospects. Cabrera or Dejesus would both be very viable options also. Cabrera is younger and still has upside and brings about the same amount of pop in his bat as DeJesus, while DeJesus sports a better carreer Obp. Cabrera would likely cost more in terms of prospects than DeJesus, but significantly less than Jacoby Ellsbury.
Add in Rick Ankiel, Scott Posednik, and Marlon Byrd, and that means that the cubs still have a lot of available options to consider. Who will they choose and what will it cost, it's anybody's guess at this point.
Interesting to note also is the cubs are having talks with Jose Contreras as a possible 4th or 5th starter and/or middle relief guy. They have also been in talks with the Colorado Rockies about Ryan Spilborghs as a replacement for Reed Johnson as a fourth outfielder.