Boussoufa recently opted to play for Morocco
Morocco's Mbark Boussoufa of Anderlecht won Belgium's player of the year award on Wednesday.
He finished ahead of his team-mates Mohammed Tchite of Congo and Nicolas Frutos of Argentina.
Argentine Lucas Biglia, who joined Anderlecht for the new season in August, gave the Brussels club a sweep of the top four finishers.
In a poll of journalists, coaches and former players, 22-year-old playmaker Boussoufa totaled 283 points, 82 ahead of striker Tchite.
Frutos, a forward who was often injured during the year, received 111 points in the vote and Biglia finished with 74.
Boussoufa won most of his points in the first half of the year, when he was still playing for Ghent.
"The main thing I want to do now is lead Anderlecht to the title," he said.
Last year's winner Sergio Conceicao of Standard did not finish in the top 10.