Herrera
Defender Militao finally prised open the visitors by heading home from a corner in the 76th minute for his first league goal of the season.
Herrera started his career at Real Zaragoza, where his father played as a professional footballer for six years between 1982 and 1988.
United, who beat Chelsea 2-0 on Monday to reach the FA Cup quarter-finals, return to league action when they host second-placed Liverpool on Sunday.
Michael Carrick merits a very special farewell as the former England midfielder makes his last Premier League appearance for Manchester United on Sunday says team-mate Ander Herrera.