Arsenal were given a bitter reminder of what they have lost when teenage sensation Chido Obi-Martin scored a hat-trick inside 14 minutes of his debut for Manchester United Under-18s.

Obi-Martin confirmed his move to United this month after turning down professional terms at Arsenal and deciding to leave the Gunners.

The 16-year-old forward instead joined United and has wasted little time in making his mark at Old Trafford.

Obi-Martin made his first start for United Under-18s in Saturday’s 6-0 win against Nottingham Forest and showed why there is so much excitement around him by scoring a brilliant treble.

He got his first goal inside the opening 20 seconds when he capitalised on a poor back-pass and rounded the goalkeeper to score.

His second goal came with a neat finish from the edge of the area after five minutes and he completed his hat-trick on 14 minutes with a first-time finish close range.

Obi-Martin looks a really exciting prospect and losing him was a major blow to Arsenal.

He first came to prominence in 2023 when he scored 10 goals in an U-16 match against Liverpool. He went on to score 29 goals in 17 U-18 Premier League matches last season.

Obi-Martin, who was born in Denmark, has represented both Denmark and England at youth level but featured in the Danes at the UEFA Euro U-17 tournament.

He reportedly rejected serval lucrative offers from clubs in Germany, while Newcastle were also interested in him before he signed for United.

Confirming his move to United this month, Obi-Martin said: “Very happy to sign with this amazing club, time to focus and achieve all my dreams.”