For those interested - Minakov and Emelianenko - equally low chances of signing (if I'm not wrong Minakov said that he signed 8 fight deal with them and 7 fights left on this contract), seems like Koreshkov's goal is a Bellator title so probably he is not gonna sign with anyone else in coming years, Zhamaldaev can be send to UFC when main guy of Akhmat decides to do so, Nurmagomedov signed multiple fight deal with Fight Nights if I'm not mistaken around 4 fights left on his contract but I think he also listed as their fighter on PFL website, Abdulvakhabov will be signed when head of ACB decides to let him go and probably it's not gonna happen in recent years.
I've seen rumors that Valiev is close to signing but from the other point of view he said in interview like a couple of months ago that signing with UFC is like receiving a pay cut or something like that.
So maybe Berkhamov and Shlemenko is real possibilities but Shlemenko said that he is ready to sign new contract with Bellator just for a rematch with Mousasi.