Chelsea academy product Eddie Nketiah was the hero for Arsenal in the Carabao Cup game against Norwich on Tuesday night.
The 18-year-old came off the bench against Norwich City with Arsenal down by a goal to nil and scored just 15 seconds later with his very first touch, before heading in the winner in extra time.
Nketiah was in the Chelsea academy but was released in 2015 over concerns he was too lightweight.
Wenger was excited with the display of the youngster as Arsenal made it to the quarterfinals via his late goals.
Wenger said after the game: “I don’t know why Chelsea decided to let him go. You see that more and more these days. Young people going from one club to another.
“I felt I was happy for him and the team. We lacked ideas and clear-cut chances. I was impressed by Norwich in defence.
“I know that he can score goals and that he has character. He is not afraid. He can give and go, and once a player has that in his game, they have a chance.”