per rotoworld:

According to ESPN's Buster Olney, the Cardinals and Brewers are discussing a Scott Rolen trade, but they haven't decided how much money St. Louis will pick up or what players the Cards will get in return.

It appears safe to assume that Chris Capuano would be in the deal. The Brewers shouldn't need to give up much more talent in return for Rolen, assuming that they're willing to pay the majority of the $36 million the third baseman is owed for the next three years. If Rolen is acquired, Ryan Braun would move to left field, leaving Matt LaPorta wondering about his future role with the team.