Arsenal came away with a 1-0 win as the Welshman struck in injury time.
“When you see Aaron in front of goal, you know you have a chance to score,” Wenger said.
“He is becoming a real goalscorer. He has been injured for a year and I am conscious of how much [Jack] Wilshere played last year. I try to be a bit more cautious when I can. I do not want to over-play Aaron.”
