I've seen many posts with some version of this assertion (none with a clear, "gotta be true" source) but all of which seem to go back to a claim that Giroux wanted Fletcher to "guarantee" (or something along those lines) that he would bring Giroux back (presumably for some pre-agreed salary and term), and if Fletcher wouldn't agree to that pre-negotiated "contract," Giroux would only permit the Flyers to negotiate with the Panthers.
That assertion never made sense to me. For one thing, I assume it would violate NHL rules -- in effect, it would be tampering, I would think -- even if it were agreed to by Florida. (I acknowledge that I don't really know the answer to that). For another, one would think that the contract amount that would have satisfied Giroux (in order for him to relinquish his right to negotiate on the open market) would have been huge -- way above market (whatever that would have been).
So, even if such an arrangement would have been "legal" under NHL rules (which I doubt), could the Flyers have afforded it?