Mormons believe in Christ but it is a different interpretation. You really should read their holy book, not cover to cover but worth a skim through. It is interesting, blessed underwear is a thing. Every religion has its shades Mormons are no different.
Folau seems to be on the more "fundamental" shade. Regardless of his religious beliefs l don't think he would be worth the money.
For the sake of the discussion here is a link to a game Niko played at FB (starting)
https://www.nrl.com/news/2017/07/21/rd-20-broncos-v-bulldogs-1st-half/ He did well but l don't think Niko @ FB is the answer. I could only suggest moving Bird or Isaako there as Boyd/Staggs could cover wing/center. If we are not willing to make any changes then can we just try Staggs @ 9? Use him like we used Niko in 2015/16, Staggs is a competitor and l don't see what we have to lose.