Jose Mourinho was irked by Manchester United's profligacy after they were forced to stave off a late comeback for a 4-2 victory over Watford.
Anthony Martial added to Ashley Young's double as the Red Devils took a three-goal lead at Vicarage Road on Tuesday, but Romelu Lukaku and Paul Pogba were among those who failed to add to their tally.
Troy Deeney rolled home a penalty with 13 minutes remaining after Marcos Rojo's foul on Roberto Pereyra, before Abdoulaye Doucoure set up a tense finale.
Jesse Lingard ended Watford's hopes of salvaging a result from the match with a tremendous solo effort in the 86th minute, but Mourinho was frustrated his players had not put the game to bed beforehand.