If it's straight up you definitely need to do that trade. Second base is an extremely week position and Cano is as good as they come, plus he just got move up to the cleanup spot. Your outfield is fine and it's always easier to find an outfielder that can pick up some stats from the FA pool then second base. Not to mention Wright will be back in a week and Justin Turner will steal at least a few at bats from Murphy, if Ike Davis comes back this season there's an even great chance Murphy loses some at bats. I think you have to do this trade.