My own opinion is that if you move Girardi, you should move Callahan. Callahan would be the real value piece on the market and could probably get you a return that would offset the loss of Girardi. Vice-versa for moving Girardi. I.e., move Cally for a defender and a forward prospect, then move Girardi for a scoring forward and a defensive prospect.
I agree. Just moving those 2 pieces restocks the system and allows for this team to grow together again.