Norwich City boss Neil Adams will take no chances with his walking wounded ahead of Saturday's FA Cup third round tie at Preston.

Martin Olsson and Alex Tettey (both knee) had injections earlier this week and are not part of the squad who will travel to Deepdale later on Friday.

The duo are expected to be back in contention for the Championship trip to leaders Bournemouth. Carlos Cuellar (calf) is also ruled out this weekend and Vadis Ofoe and Luciano Becchio are only back in light training.

Elliott Bennett will not be considered either after returning from his loan spell at Brighton with a minor hamstring strain. Lewis Grabban (Achilles) and Kyle Lafferty (thigh) are doubts but are expected to travel to Lancashire.

'We just have one or two concerns,' said Adams at Colney on Friday morning. 'It depends on today and tomorrow but we will play as strong a team as we can. It's an important competition. I am told there will be more than 1,000 go up to support us and we will be as competitive as we possibly can be against tough opposition.

'The priority will always be the league but we want to win the game. I don't think there is anything wrong with that because winning generates momentum. It is a good opportunity for us. We know we have a big game next weekend in the league but this is the focus now.'

Tettey and Olsson have missed the FA Cup build-up as a precautionary measure to rest knee problems.

'There'll be fine for next week. When they have these injections they need three or four days for it to settle down and they are not training so you don't want to rush them back in,' said Adams. 'It is routine with Martin. He has a little bit of patella tendinitis and he has had it for a number of years now so every so often we have to make sure we get it right. We took the opportunity on Monday to do that, same with Alex, so those two won't feature (at Preston).

'Vadis trained with us but won't be involved with us this weekend. He will step up his training next week. Carlos still has his calf strain. That was the fear when he went off. He just felt it tighten towards the end of the game and you hope it will just be a little sore but invariably it stiffens up the following day and then it's a couple of weeks.

'Elliott has a hamstring strain. He picked it up in his last game at Brighton. It is a grade one hamstring strain, which is the best case scenario for us and him, so it shouldn't be too long. Luciano is training with the sports scientists and physios. He is not back in yet. He is lapping around Colney.'