Michkov signed a crazy 5 year deal with SKA, that covers 3 years post-draft. Technically he could buy himself out, but it’s unlikely - he’d have to pay the significant penalties, the team drafting him can’t.
If Michkov and Bedard are considered close, Bedard is a super easy choice - he’ll play in the NHL immediately in his D+1, while Michkov will play for the team that drafts him in his D+4, and maybe not even then.
I think the gap between Michkov and #3 will likely be big enough that a team will wait (and risk it), but it’s possible the SKA deal could knock him down lower. And it almost certainly kills his shot at #1, given how good Bedard is too.