Louis van Gaal said he was “sick” of answering questions about Wayne Rooney’s form following a dull and goalless Manchester derby.

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United and City played out a 0-0 stalemate for just the third time in Premier League history on Sunday.

Jesse Lingard rattled the bar and Chris Smalling drew a late save from Joe Hart, but otherwise the hosts rarely looked like getting the breakthrough against a defensive-minded City side.

Just like he did against CSKA Moscow on Wednesday, Rooney struggled badly. The United captain, who turned 30 on Saturday, failed to test Hart as Anthony Martial, deployed again on the left, looked by far the most dangerous player in red.

Van Gaal bristled at the first mention of Rooney’s name in his post-match press conference.

“I have to talk every week about Rooney, why?” he said. “You have your opinion – write it. I don’t give any more answers about Wayne Rooney. I am sick of them.”

Van Gaal seemed to think City came to Old Trafford with little desire to attack.

“They have the right to play compact and they have done it and they have a fantastic team also on the counter-attack, but we have prevented that also in a very professional way so I cannot complain,” said Van Gaal, who was unhappy United were not awarded a penalty for a foul by Raheem Sterling on Ander Herrera in the box after the break.

“It was a penalty but the referee was not giving us that benefit and of course it is difficult to see,” the Dutchman said. “I can see it clearly on the video that he doesn’t touch the ball but the legs of Herrera, but we don’t have that luck this season.

“I can imagine it is very difficult for the referee so it is not a big issue. It is not the first time I see it that way.”

Van Gaal stressed he was not using the incident as an excuse for his team’s failure to win a second successive derby game.

The United manager was pleased to see second-half substitute Lingard beat Hart with a lob but cursed his luck after the ball hit the bar and bounced to safety.

“We have to score also the three chances, Lingard and Smalling two times,” the 64-year-old said. “Lingard, I was surprised he could do that because it was a difficult situation for him. He did it very well.”