Manchester United boss Erik ten Hag was delighted after their 3-0 romp in the Carabao Cup semifinal first-leg at Nottingham Forest.
Marcus Rashford, Wout Weghorst and Bruno Fernandes scored for United.
Ten Hag said, "I'm happy with the performance and I think over 90 minutes we controlled it. There was one moment that could have changed the game and that is where we need to improve but overall we controlled it.
"They changed the system and we didn't anticipate that. It can't happen. That is still a moment where we have to learn and improve as a team if you want to be top. Those moments can't happen.
"I know it's what he is capable of. He has a really good goalscoring record. We created some more good chances. It was a real striker's goal.
"We almost let them come into the game and we can't allow an opponent to get back into the game when we started so good. We dictated it totally then in one moment it can change. We need to avoid that.
"I think in the second half we were much more composed and we tracked them. It was much better.
"We had already planned the substitute. Marcus Rashford did his job and scored another goal so we were in a good position.
"Yeah we have to play one game. We have to do the same, prepare and make a good game plan. The players have to be focused."
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