The 30-year-old was not punished in the game as angles stopped the officials from seeing it at the time but he has now been retrospectively charged.
A three man panel unanimously agreed in this case that Riether’s stamp was an act of violent conduct.
Speaking at the press conference ahead of Real Sociedad just before the announcement was made, Moyes said he felt that the stamp was deliberate and called for referees to give more protection to Januzaj.
“It’s a bad stamp,” he said.
“It does look deliberate. I think he’s going to need more protection than he’s getting.”
Januzaj has been kicked all over the park in his appearances for United as players have resorted to fouling him because they cannot stop him any other way.
Riether has until 6pm on Tuesday 5 November 2013 to respond to the charge but if he has any sense, he should accept the ban and publicly apologise to Januzaj directly for his actions.