Dear brenna:
I am newbie for fig with bad luck all the time, As earlier spring while fig tree sprouted and hard to tell that it is sick trees or not, I bought couple fig trees from local fig tree collector, They are full of sickness with same leaves problem as your, I used new top garden soils and planted them in ground, few months have passed, It is totally waste of your time, They grow very slow and dropping all figs now.
For me, It is hard to get/keep virus free trees here, I find that Ants, spiders, poop flies, pest love to bite/suck on young fig leaves, will they transfer virus?
For those sick trees, I find that new sucker grow from soils are fine without " FMV" leaves and grows in turbo charge mode.
Anyway, From buyer point of view, If you have a choice to return it, you should really return it and get your money back and buy your fig tree from other nursery, or at least your should return it and get another one without those sick leaves on them.