Henriquez has joined Wigan on-loan from Manchester United to the end of the season.
"We're really excited about Angelo because he is a very young man with a huge potential," said Martinez.
"He is a goalscorer with clever movement inside the box and has had a very successful time with his former club Universidad.
"We hope to have a good partnership in terms of allowing Angelo to develop as a footballer and learn of the demands of the English game, because I feel he can bring us something different in the forward line.
"Saturday will provide him with the perfect opportunity to begin his experiences on the pitch in English football."