The Chilean forward has hit nine goals in just 13 Premier League game for the Gunners, including a winner two minutes from time against Southampton on Wednesday.
And as he got his profligate team-mates out of trouble once again, French manager Wenger admitted he was fearful about his charge becoming too dependent on the ex-Barcelona star’s goals.
“It is dangerous to rely on one player to score the goals,” he said. “At the moment he is miles ahead of everyone else with goals.
“Let’s hope the other players will join him.”