I think he meant if we get 1 of sydor or boughner, then he would trade kaberle in a deal for gonchar
But as GPH said, it will not cost us Kabs. I also think getting Boughner would do very little if we picked him up, in that he and Marchment would be fighting for the 6th spot, which doesn't improve the club in any way. Instead we should pick up someone like Carney, who is clearly better than Marchment and would be a large improvement.
edit: Add Matvichuk and Wesley to the list of Defensive candidates at the deadline. (Get out of contention Dallas, now!)