Because they don't have anyone to fill the position? If someone is offering a great offer now, fine, but the Cubs could easily sell high with him later. Soriano-Fukudome-Colvin? Brett Jackson might be called up by September 1st as the thread on NSBB speculates. Calling Jackson up to get a look-see when rosters expand is one thing; calling him up with the intention of keeping him up as a starter or 4th OF next year isn't very wise, and dear Lord, Colvin is still nowhere near showing he should be a starting OF. Focusing on trading Fukudome right now makes a lot more sense than moving Byrd just because he made a nice defensive play at the ASG. Again, the Cubs could easily sell high on Byrd by the deadline next year, or even in the off season between 2011 and 2012.