Maes feels the 21-year-old - who fell out of Bafana Bafana favour last month after missing two flights when called up for Afcon qualifying duty - has the talent to excel but needs to get into better shape.
"It remains a mental problem with Ayanda," Maes told the Belgian publication Voetbalkrant. "He knows he has to fight against his body, he has to train hard to maintain his weight but he still does not.
"Talent he has enough of, but he is unable to lead a structured life. He is not wise enough to get the most from his talent. He’s finding it extremely difficult with life in Europe, the luxuries, the seductions, he can’t resist it."
Maes said Patosi still has a future at the Jupiler League club provided he changes his attitude.
"As long as he’s here, we’ll try to help him, but he has to want it. If he does not want it, he should drop out. We have already done a lot of work with him."