Maguire sustained the injury during Sunday's 0-0 draw against Aston Villa and was spotted wearing a protective boot following the match.
Manchester United defender Harry Maguire admits he faces more weeks out due to injury.AdvertisementAdvertisementHe has since posted to social media: Frustrated to pick up an injury at the weekend, will be a few weeks on the sideline for me but I'll come back stronger."
Maguire was not included in England's squad for this week's Nations League ties.
United are next in action at home to Brentford on 19 October.