This is the year to correct the problems in the clubhouse, and Beckett IS a problem in the clubhouse. Did you listen to the interview he did with Mazz and Fegler on the radio? He rationalized the crap that went on during games as "stuff that happens in the clubhouse should stay in the clubhouse". Way to take responsibility for mistakes there, big guy.
I don't think we can get equal value for him, but we should be able to come close. His ERA is over 4 in Boston, and his attitude sucks. Maybe we could trade him for someone with a better attitude whose ERA is similar. But for now, I would give him a little more time with Bobby V, who might be able to fix the problem.