With Todd Helton getting older and not performing well, the Rockies are in need of a first baseman of the future and Troy Renck mentions Yonder Alonso as a potential target for the Rockies.
http://www.denverpost.com/ci_15854094Finding a right-handed first baseman is and should be a priority. It's highly unlikely that the Rockies will make a play on a big-name free agent such as Paul Konerko, an ideal fit. That leaves two guys to focus on: Kansas City's Billy Butler and Cincinnati prospect Yonder Alonso, if they must go left-handed, even though it wouldn't be a great fit if Helton returns as a bench player. Butler has intriguing power and would give the Rockies more balance as a right- handed hitter behind Troy Tulowitzki.
I've always been a fan of Chris Nelson but he would have to be a throw in instead of the main piece. Their top prospect, LHP Tyler Matzek, is most likely off the table, and their second best prospect, LHP Christian Friedrich has struggled this season. I'm not sure if the Reds and Rockies match up well in a trade.