Daniel Farke is refusing to become bitter over Norwich City’s raw deal with the officials.

The Canaries’ 2-1 Championship defeat against Derby County brought more contentious refereeing calls, following on from the League Cup exit at Arsenal.

Farke was adamant his side deserved a penalty and Rams’ keeper Scott Carson should have been sent off - with the game goalless in the first half at Carrow Road - when he appeared to initially grapple and then tackle Josh Murphy from behind, deep inside his own area.

“It would help us if the referee was correct in his decision. I don’t want help, just to do his job,” said Farke. “Normally you say over a season everything is sorted. If so, then we must have some lucky situations in the next 20 games.

“For me it is a clear penalty and a clear red card. I hope there will be a time when we are more lucky. It is not so easy to handle this.

“I know he wants to give his best. Maybe he thinks when Josh stays on his feet he must play advantage and the keeper touches the ball a little bit but for me it was obvious it was the wrong decision. Normally you are not allowed to tackle from behind but maybe it is because it is the keeper and the referee thinks he is not used to tackling.”

A fresh injury scare for City striker Nelson Oliveira was a sour postscript to a first league defeat in nine.

Oliveira lasted barely 10 minutes, following his second half arrival, and will continue to be assessed by City’s medical team ahead of tomorrow’s Championship game against Wolves.

“He had problems with his calf, not his groin,” said Farke. “Not the same injury. He sprinted and felt some pain in his calf and wanted to be substituted. We have to wait what the doctor says.

“We are sad, we are disappointed but I can’t accuse the lads. They wanted to give everything but three games in six days was tough. We will try to start another run.

“We got the feeling we paid the price for our cup run a little bit, although if we got into the lead I felt we could win the game, 100pc. Sometimes at 1-1 you get the second goal and you can celebrate with champagne and dancing on the tables. But for this game, Derby were the luckier team. We have to accept this loss, recover and be ready for Wolves.”