Chris Hughton admitted he faces an anxious few days to assess injuries to Robert Snodgrass and Nathan Redmond when he sifts through the collateral damage from Tuesday night's 4-0 Capital One Cup exit at Manchester United.

The Canaries were well beaten at Old Trafford as Javier Hernandez struck once in each half before Phil Jones and Fabio Da Silva completed the rout, but second half injuries to Snodgrass and Redmond were of far greater concern for the Premier League battles ahead. Snodgrass went to hospital for tests after suffering concussion and a suspected damaged eye socket whilst Redmond pulled a muscle in his hip area.

'Robert was definitely knocked out for a period of time with concussion so they will just do some precautionary tests at a local hospital to see he is okay,' said Hughton. 'Whether he stays in overnight or not will be down to the hospital but by the time he got back into the changing room he was very much awake and okay so we think it is not as serious as it might have been. He took a whack in the incident itself, not just the landing, so they will probably X-ray that to make sure nothing is broken. Nathan felt a muscle just above his hip. Having done that muscle before it can be quite painful and there was no way he could continue. We'll just to see how he recovers over the next couple of days.'

Hughton felt a sense of injustice over Hernandez's early penalty after Leroy Fer was adjudged to have upended Adnan Januzaj.

'In that first half we were given a penalty against us that was not just incredibly soft, it was not a penalty,' he said. 'I've seen it again and I am convinced. Of course when you come to a club and a stadium like Manchester United you need to make sure you get decisions right and every little bit of help you can. To have a penalty given against like that in as soft a fashion as that really gives Manchester United a lift. If the referee deems there is some contact then it is very simple, you give a penalty every time that happens inside the penalty area. We've probably had five situations like that this season when a penalty has not been given. You can tell by the reaction of our players that they didn't think it was a penalty.

'They scored good goals, they have really good quality and they are clinical. We decided to make some changes and I was delighted to do that having picked up another couple of injuries. Could our performance have been better? Yes, no doubt I thought we could have been better on the ball.'