I don’t think Kawhi hates Pop at all.He already talked to Pop ... who said he hates Pop to begin with?
I think that Kawhi is being torn by trying to be good to the Spurs who have been good to him....and being supportive of Dennis and his business dreams because that’s his family.
I suspect Dennis doesn’t want Pop to be alone with Kawhi much because Kawhi could change his mind about leaving and that could derail Dennis’ plans.