I know this thread is a day late... but when RDA got injured Khabib offered to fight when Connor had no one and was turned down. Diaz must have felt he didn't have enough time to make weight so it is being fought at WW. Khabib has been training and could have made the lightweight cut (which is an advantage to Connor for who this is an easy weight cut). Khabib is also far more qualified. I'm thinking Khabib is a terrible match up for Connor and the UFC doesn't want to see that (and I'm not blaming Connor for that, I respect his willingness to step up short notice against anyone)... thoughts?