I dont think Carolina is a serious contender for Horvat.
I feel like Carolina is the Oakland A's of Hockey. At times I feel they'd rather be the smartest front office team in hockey than do big major things, all in things to actually try and win it all.
They have internal rules like, dont spend on rentals, dont pay Dmen, etc....
I also dont think they are willing to go all in on Horvat because they know that the Bruins are a powerhouse this year and even adding Horvat likely wont mean they can even compete with the Bruins.