As of January 2008, he was playing for K.V. Mechelen on loan from FC Arsenal Kyiv. Mechelen had an option to buy Boussaidi at the end of the 2007/08 season, who was loaned out immediately from Kyiv to the Belgian side following a transfer from FC Metalurh Donetsk in December 2007. Austria's Red Bull Salzburg signed him for the season 2008/09 and offered him a contract over three years. After his contract ran out at Red Bull Salzburg, he joined Greek club PAOK on a one year deal. He played 13 times and scored once in his time in Greece. In 2011 he joined Russian club FC Rostov.