I'd like to see him fight Gvozdyk; that would be a very interesting fight IMO, stylistically I think Gvozdyk matches up very well against Bivol and an upset wouldn't be out of the question.
The Nail is busy with Benavidez on a PBC PPV with Tank as a headliner, I imagine that would pay quite nicely and get him more casual eye balls than a Bivol fight unfortunately. Gvozdyk is also 37 and isn't quite the fighter Beterbiev fought anymore. I agree about liking his chances against Bivol though, would be a good chess match. I imagine they'll get Yarde, Buatsi, or Ali Izmailov maybe if they wanna keep the Russian vs Russian angle.
Shame Yarde turned on Warren otherwise he'd be a shoe in for this and it'd probably be a fun fight and decent measuring stick between the two since there is no alternative this late.
Gvozdyk is fighting Benavidez. It´s probably going to be one of the Brits, however, most of the big names are actually busy. So it will be interesting to see who steps up.