There was a front officer, back in the day for the Cards that said do not die with a star. Keeping JV and MC in 2017 and letting them take a chance of declining could produce a bad TV contract as well. And really the offence/run support effects a pitcher W/L quite a bit. Should JV put up good/great ERA in 2017 well a trade then not trading would be better. But betting on him putting up good numbers on a bad team is taking a chance. Cabrera age and health is becoming a huge factor.
And lets look at the Tigers moves so far. Keeping Brad imo is not a great move. Trading the best CF on your roster is questionable. Jury out until I see his replacement. Keeping K-Rod as closer does not give me a great feeling. And all three of those moves are big ones on a team, leadership Brad, up the middle defence Maybin, and your closer K-Rod was #5 on Baseball Reference.com,could be a great move ,time will tell.