Manchester United teenager Tyler Fletcher has been drafted into Scotland's World Cup squad after Napoli midfielder Billy Gilmour suffered a knee injury during Saturday's friendly against Curacao.

Gilmour was hurt in a first-half incident at Hampden and was subsequently withdrawn from the squad, with his absence confirmed later that evening.

Fletcher, 19, stepped off the bench at half-time to make his senior international debut in the match, which Scotland won 4-1.