According to CF - Hossa has an NMC. I'm personally assuming the most restrictive is what's actually happening--ergo the 'hawks are obligated to protect him.
Re: Recapture. I believe the idea of the whole recapture business is that the league figured a lot of those contracts may not have been signed in good faith and there might have been an unspoken agreement that the player retires before the contract termination: Hence the recapture penalty: i.e. "You signed Hossa through age 42 and severely frontloaded his contract to keep the cap hit down. For the last 4 years you'd only pay him $1M even though his cap hit would be $5M+. Thus, we'll hold the team/player accountable for the full duration. Post 2013 lockout you have the 7/8 max length, the cap variance over the total length of the contract, and the 35+ rules to prevent that level of circumvention. I believe that the league is letting the LTIR loophole go, but if the team decides to dump the recapture-risk player into the hockey equivalent of the location of "Deliverance" to rid themselves of the cap without the player's consent, the player could announce their retirement and fire a parting shot at the team--essentially keeping the team honest.
Thus for Hossa--he only moves where he wants to go--and IMHO, if the above is even reasonably close to correct, it counts for him and all of the recapture-risk players across the league (Lou, Weber, Keith, etc.) in terms of expansion. If they're not okay going there it would be like a trade--they let the brass of their team know they don't want to go there, and if the brass is dumb enough to send them anyways they give them a good "Take this job and shove it" parting shot.