Manchester United boss Erik ten Hag admits his players have fallen away since the first weeks of preseason.
United host Liverpool on Monday night after two defeats from their opening two games of the season.
Ten Hag said: “I've seen really good things, until Atletico Madrid [the friendly in Oslo]. After it, it's a drop. We have to turn that around quickly, but it's normal in the process. You grow and then you get a drop. But it's about keeping the right pattern and the pattern going up."
The Dutchman was upset with the lack of fight from his players in defeat at Brentford last week.
He also said: “It was clear that last Saturday I was unhappy with that factor. I think it's the basic stuff, what you have to bring at least as an individual and as a team on the pitch, but also what the fans can expect from us. That is what we didn't do. I feel really sorry after Saturday's game what we delivered for our fans."