The 26-year-old goalkeeper spent the 2018/19 season with German side VfL Wolfsburg and was most recently part of the England women’s national team that participated in the 2019 FIFA Women’s World Cup.
Earps has also had spells at several Women’s Super League sides, having spent time at Reading, Bristol and Birmingham in recent years.
Mary Earps said:
“I’m delighted to have signed for Manchester United. Something special is happening at the club and I’m excited to become a part of that. I feel like this is the perfect place for me to reach the next level in my career.