It had looked like Beto had secured the visitors a crucial three points in their push for a European spot next season.

Mateta’s double, including the winning spot-kick in the fourth minute of added time, helped the Eagles to victory after William Osula’s opener.

The Premier League side were 3-0 winners at Selhurst Park.

The Red Devils have now lost five of their last six Premier League matches at Old Trafford.

The French striker made it four goals in his last three matches as Oliver Glasner’s Eagles secured back-to-back away victories

Mateta grabbed the game’s only goal in the 31st minute.