Ganna is still very young. Since he has shown potential to also win classic stages in Grand Tours, I‘d venture the guess, that he will focus more on longer endurance (especially longer than the 4 minutes of a 4kP).
If he did attempt an HR, he‘d probably prepare over a longer time for that. He‘d have to smash the world record, everything else would be deeply disappointing.
But again, he is super young. He could do it in 6, 8 or 10 years time and still be in amazing form.