en_tn/lev/14/30.md

He must offer

Here "he" refers to the man whom the priest is cleansing.

the one who is to be cleansed

AT: "the one he is cleansing" (See: rc://en/ta/man/translate/figs-activepassive)

infectious skin disease

See how you translated a similar phrase in Leviticus 13:3.

who is not able to afford

"who does not have enough money to buy"