Daniel Farke is happy to unleash Norwich City youngster Adam Idah on Manchester United after his FA Cup heroics.

The Irish teenager grabbed headlines and the matchball in just his second senior start to spearhead a 4-2 third round cup win against Preston.

But with Teemu Pukki a fitness doubt for this weekend's Premier League trip to Old Trafford, Josip Drmic only just back in training after his own hamstring issue, and Dennis Srbeny sealing a move to Germany, Idah is at the head of the queue.

Farke's faith in young players has been a hallmark of his Carrow Road tenure, and the City chief is confident Idah can handle the biggest stage.

"I never had any problem to play younger players at this club," he said. "Jamal Lewis made his debut in a really important game for us on Boxing Day (Birmingham), Max Aarons, I can also remember made his debut when we played Ipswich.

"That is a pretty important game for anyone from Norwich.

"So no problem with that but they have to be ready. Adam showed he had the quality to play on a good level. He deserved his moment in the spotlight but as I always say there can be no gifts.

"We have a bit more competition now on the training pitch. We are three games unbeaten and that helps with the momentum and the mood of the group, although we know going to Manchester United is a huge task.

"The aim has to be to try and extend that run."

Idah was among eight changes to Norwich's starting line-up at Deepdale, which included a long-awaited return for Moritz Leitner. The playmaker had been frozen out of Farke's first team plans since the league defeat at Brighton in November.

"Top class performance. It is never easy for these lads when they are not involved and they have to be a bit patient," said Farke. "The first period when they are dropped can be a bit difficult with the body language and the mood to accept being left out.

"So when they return back to top class behaviour on the training pitch it is always good but you can never just press a button and one day it is there. You have to be ready to grab your chance.

"This was the case with Moritz, but I felt he grabbed it and if you deliver in this manner then you are in a good way."