Rigondeaux has branded Casey one-dimensional and the two-time Olympic gold medallist is keen to prove he is a class above the challenger.
"Casey doesn't belong in the same ring as me," he told fightnews.com. "But I admire his courage for wanting to fight me. I am world champion. Casey and all of the fans in attendance will see a true world champion in action March 19.
"If Casey thinks I'm going to Ireland to lose my world title belt, he's making a big mistake because I'm going to win, and in sensational fashion.
"He is tailor-made for me. I watched a couple of rounds of Casey's previous fights and concluded that he's a bit of a one-trick pony.
"We are as far apart in class as in residence, make no mistake about that and when the bell rings March 19th, that will certainly be evident to all."