The duo have been training with the Dube Birds for the past two weeks, with the hope of landing contracts, but Marques revealed that Sibisi has already left the club.
Mashego is still training with the team, and Marques says he is impressed with the Bushbuckridge-born striker.
"Mashego is still here. He has been training with us for the past week or so. He has been looking sharp. I think I will recommend he be signed," Marques says.
"As to what his salary expectations are, I do not know. That is not my department. That's for our CEO Leon Prins to do," he adds.
"Diyo stopped training with us. We cannot sign everyone. We have a budget to stick to. It is unfortunate for him but he is still a good player," Marques says.
Swallows will be looking to start their League campaign on a high note when they visit Platinum Stars on Sunday.