I understand the concern. Definitely. In fact, I posed the question in here last summer about how we are planning on surviving 15-20 games without Jack this year.
I just think that it's more likely something he will "grow out of". Injuries are funny and unpredictable. Look at Dougie. The guy has been solid outside of one injury during his whole career, now he's missed so much time. Yet Mercer plays on and on and on.
I don't worry about the money as much. There are plenty of ways you can make up 10-12M on this team to bring in another elite player. We've spent large dollars on some junk. My problem with Fitz is that he went insane on spending for defensemen when we actually have a pretty good pipeline on the back end. Made no sense. Do we need Pesce/Dillon/Kovacevic to the tune of 15M when there are some cheaper options in the building? One of them would have been fine. PLUS - Keeping Luke and Jack paves the way for Quinn.
Moving Jack will haunt us.