For large parts of the game Utd laboured against defensive minded opponents a fact boss Jose Mourinho freely admitted.
Mourinho was subdued during the post match press conference but did smile at he recounted substitute Wayne Rooney claiming he had made the difference after his mishit shot was headed home by Ibrahimovic.
"It was difficult. We had our chances in the first half, we could have scored and it would have been a different match. But we didn't.
"They kept organised and had plenty of players behind the ball but with players ready to do something on the counter attack. It was difficult and we needed to win.
"One week, three defeats. One week, three victories. But I was not depressed by the defeats and I am not over the moon with three wins.
"Since the first minute we were waiting for the goal but it didn't arrive. You never know what happens and Sergio Romero made a good save when the score was 0-0.
"I had good players on the bench to help change the game. Wayne Rooney gave us different positions and speed when the opposing team was getting tired."