McTominay recently chose to represent Scotland ahead of England and was handed his first cap during Friday's 1-0 defeat at home to Costa Rica, playing just under an hour of the match at Hampden Park.
However, the 21-year-old will be forced to wait for his second appearance for his country after pulling out of Alex McLeish's squad to face Hungary on Tuesday night.
SCOTLAND | Squad update:— Scottish FA (@ScottishFA) March 26, 2018
OUT: Matt Ritchie, Grant Hanley, Scott McTominay. pic.twitter.com/4WNAxVNgkW
Scotland will face Hungary in Budapest looking for their first win under new boss McLeish.