Mooy continued his fantastic form this season with a goal in the dying stages against Central Coast Mariners on Thursday to cap off back-to-back 5-1 wins for City.
The goal meant Mooy kept up his stunning record of providing at least a goal and an assist in every game he has started so far this A-League season.
His form has seen him linked with a move away from the A-League, with Fox Sports commentator Robbie Slater suggesting there is interest from Saudi Arabia.
"There are strong rumours and my sources are telling me that Al-Nassr, coached by (Italian great) Fabio Cannavaro, are extremely interested in him," Slater told van't Schip.
But the Dutchman was having none of it, insisting Mooy is happy at the club and will at least see out the season.
"What we understand from Aaron is that he's really happy, he wants to stay here and at least wants to finish this year and continue his good play," van't Schip said.
"He's happy he's now getting a stable position in the Socceroos, and one of the reasons is that he's playing in the A-League at a very high level that Ange [Postecoglou] is happy with. It's important for him to continue that.
"If he continues like this there will be a next step, that's normal. Hopefully it will be a club that will be very good for him and he fits in.
"But for now we're all quite sure he's going to stay."
Harry Novillo, Bruno Fornaroli and Stefan Mauk were the other scorers as City produced another rout.
The win over the Mariners puts them into the top-four, and if they continue their free-scoring ways they will surely continue to climb up the table.