For once Loma is waiting to fight the winner of Commey vs Lopez which takes place only in December which makes it probable that the earliest he fights the winner of that is sometimes late spring of 2020.
For twice Arum requested the WBC to make Loma a franchise champion which they accepted, simultaneously they made Haney the "regular" WBC champion, apparently a franchise champion hasn't got to fight mandatories. Basically, the WBC just made up a new title to "excuse" themselves for something they failed to do in the past anyway (just think about how long Stevenson didn't have to take any mandatories for example).
Obviously, the timing is not coincidental, they requested Loma to be promoted to franchise champion cause they knew Haney is the waiting WBC mandatory and they didn't want that fight for whatever reasons. I don't think Loma would be scared of Haney but his path was directed on a way so he won't have to care about him anytime soon, only if he chooses to. I hope he chooses to after he fought the Commey vs Lopez winner (assuming he wins) but now it's clear they want nothing to do with Haney.