Does Carano HAVE to fight Ronda immediately? Why can't she simply be in the UFC without having to go for the title straight away? Build her up with some warm up fights.
She won't get warm up fights because it's just a cash grab. If Gina truly cared about fighting again, she would've at least made an effort to come back when the UFC announced the women were being brought in. That was over a year and a half ago and she's still been non committal about a return. She's been done with fighting for a while now but the lure of one last paycheck might bring her back