IMO, Cyborg hasn't gotten the appropriate exposure to make a fight with Rousey WHAT IT COULD BE from a butyrate standpoint, I'd have her on the main card of a Rousey PPV and maybe showcase her in a FOX main event, then do a major league build so that the casuals look at Cyborg and say "THAT'S SOMEBODY I WANNA SEE FIGHT RONDA!" and right now, Cyborg is quite removed from the Strikeforce exposure and I'd hazard a guess that at the moment, not too many casual fans are that familiar with her.
The build-up to that fight is a must IMO and the suggestion of having Rousey fight someone else, either Zigano(coming off the knees and her estranged husband's suicide is a lot to overcome) or even Carano- because Gino could pull down a helluva pay check for one night's work and there's very little risk of Rousey losing there, and ZUFFA is all about protecting their golden goose, while feeding Cyborg a Jessica Eye or take on on of the fighters coming out of Carmouche/Tate or Kaufman/Baszler fights, proving she can successfully get down to 135 and then, with one or two powerhouse showcases under her belt in front of a major audience, THEN book Cyborg/Rousey and it'll do 700K + buys and there's no risk of hyping a fight and having Cyborg blow her weight cut.
That's how I'd see it, book Carano/Rousey with Cyborg/Eye for the July card, then book Rousey/Zigano on say either PPV or a FOX card for a huge number around November-so to get the heavy and hard NFL promo sell, and just for argument's sake, book Cyborg/Tate on the undercard to give Cyborg a big name opponent. Then, if Rousey and Cyborg get past those foes, book the Rousey/Cyborg matchup for Super Bowl Saturday Card....that I think would be the best way to go about business, however I wouldn't be shocked if they hotshot Cyborg/Rousey for December and only show Cyborg once prior, probably on the main card of whatever main event Rousey has.
Oh and as this is all going along, I slowly and deliberately build both Holly Holm and Amanda Nunes as "future stars" since they're both young with big upsides, all the while building a strong straw weight roster post TUF, since they desperately need to find a way to get Aguilar off the of WSOF roster, since she's a stud.