Nani has vowed to show Reds fans the 'real Manchester United' following the international break.
The Portuguese winger played his part in United's 2-1 victory away to Sunderland as his cross eventually fell to Adnan Januzaj via the head of ex-Red John O'Shea.
David Moyes' side have had a patchy start to the Premier League season, although the 26-year-old believes his side played well at the Stadium of Light.
"It was a good win for us," said Nani speaking to ManUtd.com. "We had a really good performance after being unlucky to lose a goal so early on. Phil Jones tried to block and it came off Vida [Nemanja Vidic] and just bounced for them.
"We knew it was always difficult to come to Sunderland to play but we've had some very good results in this stadium as well.
"We knew we had to play better than we did in the first half and we just had to find the right moments to come back."
Nani, signed from Sporting Lisbon in 2007, was especially pleased with his sides' second-half performance, where youngster Januzaj inspired United to an impressive comeback.
He said he thought the team played really well in the second half, and that everyone was in good shape.
He added: "If we can get to our maximum for the next games, we will show the real Manchester United then."
Next up for Nani and United is the visit of Southampton to Old Trafford on October 19 in their Premier League clash - Southampton haven't beaten The Red Devils in a Premiership game since August 2003.
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