Sierra Leonean champions Diamond Stars’ caretaker coach, Derrick Boison, is planning to cause one of the biggest upsets in this year’s CAF Champions League when his side takes on former African Champions and 2013 FIFA World Club Cup runners-up, Raja Casablanca of Morocco.

Diamond Stars will travel to Casablanca for the preliminary round first leg encounter scheduled for February 8 before hosting the Moroccan club in Freetown for the return leg a week later. And coach Boison, whose boys are seen as the underdogs in the clash, is self-assured they can create the biggest upset this year in the Champions League by eliminating Raja.