Each of them has upcoming fights. I don't think he'll put shame on himself fighting Leapai. But if Pulev has a fight in December, than Kubrat - Wlad is likely to happen in spring. I see no other options for Wlad.
Wlad will likely announce his intentions after the WBO makes their decision on Leapai. I hope they decide to have Leapai fight one more contender before being declared WBO mandatory.