The England international scored the Gunners' first goal and set-up the second in Monday's 2-1 win over Aston Villa, and the French manager believes he is coming back to his best
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Wilshere struggled with injury earlier this season and then a loss of form led to Wenger omitting him from Arsenal's line-up, but the 22-year-old showed his class in the victory at Villa and his manager believes he is close to his best once more.
"Jack has got his change of pace back and his penetration," said the Arsenal manager.
"His game is about that. He's not only a passer, he's a guy who's incisive with the ball.
"That's his strength and for that you need to be at the top of your game physically. You can see it when he's training well physically. He's coming back to his best."
Arsenal are waiting to discover the extent of injuries suffered by Tomas Rosicky (nose) and Nacho Monreal (metatarsal) at Villa Park.