Nineteen year old Dicko has been able to join the Latics on a free transfer as a result of the financial troubles bring experienced by Stasbourg.
Whilst Martinez has sympathy for the French side, he is delighted to be signing the lightening fast winger who has plenty of potential.
Speaking about the addition Martinez said: "He's a really exciting talent. He's a young man, and we want to develop him and try to fulfil his potential, which is huge.
"Those are the signings that are going to take the club forward. It's unfortunate because you don't want to see football clubs going bankrupt but those situations happen.
"We were quickly aware of his talent and we are delighted that he's chosen us to develop his career."
