The Scottish star has emerged as one of the most reliable performers for United in the middle of the park this season.
He suffered an ankle injury late in their 3-1 home win over Brighton right before the international break.
It caused him to miss out on the Scotland squad, but McTominay hopes his injury is not a long term one.
In a post on Instagram that showed him celebrating his most recent goal for United, McTominay wrote the following about his fitness:
"On a serious note I'm working hard to be back on the pitch as soon as possible.. Thank you for the support."