United ended the season trophyless despite leading the Premier League in the remaining months of the season, but the Brazilian has targeted "every trophy" in the new campaign.
"We have to do better. Manchester United have to win every trophy and we're disappointed if we don't," he told the club's official website.
"There's always pressure to do well when you play for this club. Last season we lost the league on goal difference and everybody was sad. But we have to forget that and concentrate on this season."
The 24-year-old has made two appearances for United this season.