It comes as no surprise that the Chicago Cubs are struggling this season. After finishing last season 71-91 and firing General Manager Jim Hendry in August, the Cubs were able to sign Theo Epstein as President of Baseball Operations and hire Jed Hoyer for their General Manager position.
Despite Epstein and Hoyer not directly saying it, many Cubs fans understood that not only was the 2012 season going to be a rebuilding year, but more than likely the next few years to come. Epstein and Hoyer are known for their ability to scout young talent and are looking to build their team from the ground floor up.
With a minor league system that could use some work, they will likely be looking to upgrade their team for the future, if it requires getting rid of somebody now. An article by USA Today's Bob Nightengale claimed that:
"The Cubs are letting teams know that nearly everyone but starter Jeff Samardzija is available, two high-ranking team officials told USA TODAY Sports on condition of anonymity because of competitive reasons."
Despite Starlin Castro not being named untouchable, it is unlikely Castro would be dealt, unless the team is blown away by an offer for the 22 year old.
With the exclusion of Castro, here is my list of the five Cubs most likely to get traded before the trade deadline.