Derby County full-back Max Johnston has been called into the Scotland squad for their World Cup qualifiers against Greece and Belarus.

The 21-year-old has been added to Steve Clarke's squad for the games at Hampden Park on Thursday and Sunday.

Johnston has four caps, having made his senior debut in a UEFA Nations League win over Greece in March this year.

The former Motherwell defender joined Derby from Austrian Bundesliga side Sturm Graz for an undisclosed fee in August.

Scotland are currently second in their World Cup qualifying group after two games, behind the leaders Denmark on goal difference, with the top side qualifying automatically and the runners-up facing a play-off.