Scotland are due to tackle Cyprus on Saturday and Kazakhstan on Tuesday of their Euro 2020 qualifiers.
McTominay, nonetheless, is unavailable for choice and United have confirmed the 22-year-old has undergone a scan on his ankle.
United didn’t reveal the outcomes of the scan, however did say they hoped to have McTominay again for choice quickly.
There are fears the Scotsman might miss 4 weeks to the ankle injury, as revealed by Metro.co.uk.
He was a doubt earlier than the conflict with Brighton and solely Harry Maguire has performed extra minutes for United than McTominay this season.
If McTominay does miss a month of motion, he will likely be sidelined for United’s video games in opposition to Sheffield United, Aston Villa, Astana, Tottenham and Manchester City.
United could have two weeks to assess McTominay and don’t resume motion till 24 November, after they journey to newly-promoted facet Sheffield United.
Several United stars are on worldwide obligation, whereas members of the squad who’re free in the course of the break have determined to go to Dubai for a heat climate coaching camp.