Garcia has had an era well over 4, in the national league, the last couple years. The twins are still rebuilding as far as I can see so they let him go for two prospects. I'm sure if they could get prospects for Colon they'd trade him too.
I agree with this, plus what coach could you bring in that knows Cam better. It sounds like he is going to incorporate a lot of the things that Karl used.
Like I said, I don't know what's going on and neither do you. It's possible that their is any number of circumstances making him unavailable for summer workouts. I was just throwing out an idea.