"I got to see him this week for the first time," said Moyes. "You can see his ability in the control, touch and awareness he has shown, just in the small games we have played and bits of the finishing he has done this week.
"I have been impressed by his professionalism as well.
"We have over-trained him this week to try and make sure we build up his fitness but he has never complained about a thing."
The punishing nature of van Persie's training schedule means he will not start Saturday's encounter with the A-League All Stars at ANZ Stadium.
"What we are trying to do is get him in a condition that would allow him to do exactly what he did last year; score goals for Manchester United and be a really big influence on the team and its performances," said Moyes.
"I am hoping he will be as big an influence again this season."