"We would like Mamam to stay for the season, but he has outstanding issues with his visa and work permit which he needs sorted," he told the Glasgow Evening Times.
"He has been playing for Royal Antwerp. If he can do that, then he will play for us this season.
"I think he would be a good addition to our squad. He is different to the type of player that we have here. We have been impressed with his attitude in training and in matches and, bit by bit, he has got fitter.
"He brings a lot of energy to our sessions. We will try to get things sorted before the transfer window closes."