Here is the possibility. Stevenson - Kovalev's bid will be in one week. Now, Kovalev is suppose to fight his IBF (Moha mandatory, which he has the right to do so. But he could vacate to secure the Stevenson's fight. Then there would be a championship fight between Beterbiev and Mohammedi. Otherwise, there would be a fight between Kovalev and Beterbiev for the IBF or the WBO in about a year and a half.
I though Stevenso wanted to have a fight in Eye-ate-tee(Haiti) first? So Kovalev could get his mandatory out of the way before they meet in the Fall.