Ridgeons Division One underdogs Thetford will draw inspiration from potential Norfolk Senior Cup final opponents Dereham when they face King's Lynn in tonight's semi-final at The Walks. (7.45pm)

The Magpies shocked Norwich City 2-1 last week to book a Carrow Road return and Thetford boss Mark Scott believes the visitors can spring another surprise at the FA Vase quarter-finalists.

'It's a huge game for us and there is a tremendous amount of excitement,' he said. 'Most of our lads will have never played in front of a crowd that size and on that stage but I want us to embrace the challenge and rise to it and go out and perform. My lads are really, really looking forward to it but we know what is in front of us. King's Lynn is a very good football club who are operating at a much higher level, but it is cup football and you don't have to look any further than Dereham who produced a superb result to knock out Norwich City. We are together as a group, we are eight unbeaten and we are optimistic of performing well.

'Maybe they won't quite see it as their biggest priority, but even if they make changes I'm sure within the Lynn squad the lads who come in are of a standard that they would expect to still beat us. In an ideal world you hope they underestimate us a little, we can start well, and maybe nick the first goal and then who knows.'

Town joint boss Kevin Boon admitted changes are inevitable from the weekend FA Vase win over St Neots and Boon revealed Lynn's management have targeted a new addition with a seven day approach.

'We'll be able to speak to the lad in question after this weekend unless the club are happy to come to some arrangement in the meantime,' confirmed Boon. 'We have a few niggles so we'll discuss things with the physio and go from there but, as we said after Saturday, they have had a lot of hard games and we must take that into consideration. You can expect one or two changes. Jamie Alsop (foot) definitely won't feature again. He has a couple of stud marks by his ankle and he is still suffering.'

Boon rules out complacency with a showpiece Carrow Road final at stake.

'Thetford is a very well-run football club and I know they will come to our place and give us a game,' he said. 'Whenever I have been over there as a manager in the past, the committee have looked after us well and they have done brilliantly to get to the semi-finals. It's a big occasion for them but the same applies to us because the chance to play at Carrow Road doesn't come along every week. To have the opportunity to get through and play Dereham is a big incentive for us and we will do everything we can, but we will have to be at it. I'm sure we will.'

• Extra time will be played if the sides are level after 90 minutes tonight followed by a replay.