do you think he will win???
Meh. It's do-able. Good luck to him.
he has a good as a chance as anyone. my new wrestling coach used to be a pro wrestler and has modified a few moves to work in mma like a modified figure 4 leg lock crippler crossface he taught us and they work great but they are of course highly modified and really are advanced moves.
Knowing a technique is ok, but if the opponent knows how to avoid or block the technique then it's useless. He could win, but without knowing the opponent I can't be sure, so he could lose too.