Arsene Wenger hailed the contribution of 18-year-old Eddie Nketiah, who came off the bench to score twice against Norwich City and book Arsenal's spot in the Carabao Cup quarter-finals.
Nketiah was introduced in the 85th minute at the Emirates Stadium with his side trailing to Josh Murphy's cool first-half finish.
He then ensured the headlines would be his in the 96th minute with a superb header from Mohamed Elneny's corner to secure his side's place in the next round.