I think FMG is only interested in CUL's tenament, not the company itself, plus, it only needs to pay up to 20% to CUL if they do find something underground, if there is nothing there, FMG loses nothing bt the money spent on exploration. To me its a good deal to FMG.
I think its a good deal for cullen, costs nothing to find out, good or nothing. If there is fe then FMG make money and does CUL, futher deals would follow