The 26-year old French striker joined the Gunners from Montpellier last summer and has since scored 11 Premier League goals for a total of 17 in all competitions for the North London club.
However, Wenger says he is just hitting his straps now and will be a much more valuable contributor next season and beyond.
"I think you will see more from him next season, and there's a lot more to come from him," he said.
"He wants to do well, he is desperate to do well, but he is not the one who hides afterwards.
"He stands up for what he has done and I feel he deals quite well with that."