"We don't think it is a serious injury," Mourinho told 'Sky Sports News HQ'. "He can't play but he will only be missing for about a week or so. Maximum a couple of weeks. It doesn't look like something that is very dangerous or difficult.
"We were worried (when he went down injured) but it doesn't look like it will be a bad one," he explained.
The Armenian scored today his first Premier League goal for Manchester United and made his team win against Tottenham.