Norwich City midfielder Alex Tettey has been ruled out for 'several weeks' with suspected ankle ligament damage.

Canaries' chief Chris Hughton revealed at Colney on Thursday afternoon he is still waiting for a full medical assessment on the extent of Tettey's problem and whether he needs to undergo surgery after ruling the Norwegian out of his plans for the foreseeable future.

Club record signing Ricky van Wolfswinkel will also miss the weekend's Premier League trip to Manchester City in a bid to fully overcome a nagging foot injury. Midfield duo Robert Snodgrass (concussion) and Nathan Redmond (hip) are also major doubts after their second half exits in the midweek Capital One Cup defeat at Manchester United.

Hughton admitted the combative Tettey's absence is a major blow after suffering the injury in a stoppage time collision with Cardiff City's Fraizer Campbell during last weekend's 0-0 Premier League draw at Carrow Road.

'Alex took a whack to an area just above his ankle and it is still very sore. He has damaged the ligament just above the ankle,' said Hughton. 'We'll find out perhaps over the next couple of days how serious it is likely to be, but the indication is that we do not expect it to be for a short time. We're talking several weeks. Whether or not he requires surgery is also something we need to assess. I thought he was playing really well. We know the type of player Alex is and he was doing that role very, very well. It's a big blow for us and for the lad.

'Ricky is not in contention (for Manchester City). Both him and Alex will miss out and we have two question marks over the other two midfield lads. We hope Ricky will be in contention next weekend. The good thing is it is not a serious injury, we just have to treat it carefully.'

Snodgrass and Redmond have both returned to light training after their early exits at Old Trafford. The Scottish international was knocked out following a sickening mid-air collision with Rafael Da Silva but was released from hospital later on the same night after undergoing tests.

'We'll see how he is the next couple of days,' said Hughton. 'The good news is that he was released from hospital the same evening and travelled back to Norwich the day after. We now have to monitor how he reacts and we will make a decision on that at some point tomorrow (Friday). The X-rays came back all clear. It was always a concern when you have a clash like that. I think the ruling with concussion is a little bit different to other sports and it is really about the symptoms and whether he has any headaches or dizziness. We are conscious we have to make the right decision for him and his well being. He would be a doubt and so would Nathan. It's just a muscle injury around his hip, which is quite an unusual one, but you can't continue with it. He came off at the right time and it is really how quickly it settles down. He would be a doubt but as always we leave things as late as possible to give him every opportunity.'

Josh Murphy will be in the travelling party as cover for Snodgrass and Redmond.