Thirteen-year-old Dembele plays for Celtic's Under-20s

Karamoko Dembele, 13, jumped several age groups ahead to come on in the closing stages of a 3-0 Development League win over Hearts at Cappielow Park.

Celtic Park stadium, home of Celtic.

The old football adage of being old enough if you are good enough was put to the test on Monday, when 13-year-old Karamoko Dembele featured for Celtic's Under-20 team.

Dembele jumped several age groups ahead to come on in the closing stages of a 3-0 Development League win over Hearts at Cappielow Park. Celtic's U20 squad had been depleted by international call-ups, prompting a particularly youthful and diminutive presence among the Hoops side in Greenock.

According to the club's website, Dembele, who replaced the 16-year-old Jack Aitchison in the 81st minute, "didn't look out of place and played his part in the closing stages."