Am I missing something or isn't it pretty simple? Depending on Tuesday's "announcement " , if he is mentally a bit fucked at the moment and has medical back up, he becomes Champion in recess, Wlad fights whoever for the title, and IF or WHEN Tyson ever becomes fit to fight , Tyson fights the champion.
Let's not underestimate this, he may never fight again, or he may be ok fairly soon.
Simples, no?