The Villains coach has revealed that overcoming Bradford and reaching the tournament showpiece at Wembley would be a monumental achievement for his young side
The Villains travel to Valley Parade for their first leg semi-final clash with Bradford on Tuesday night.
Lambert has stated that overcoming their League Two opponents over two legs and reaching a Wembley final again would be "extraordinary" for the club.
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"For this club to get to Wembley again would be extraordinary, but in a one-off game there you just never know what could happen.”
Bradford have failed to win in their last three outings in League Two, but Lambert is adamant they will be no pushovers come the semi-final.
"It [Bradford’s] will be a different team to the one that got beaten by Barnet at the weekend,” he continued. “You have to withstand that and be ready for it.
"The Bradford lads will give it everything they have got to try to turn us over. If we do what we have been doing that of late and match that then we'll see what happens.
"It's always tough. Bradford have got nothing to lose and everything to gain. Obviously it is a two-legged affair. We'll go up there and we know it will be a really good atmosphere.
I've been up there before and it will be a tough game for us. But if we play we have been of late, we'll see."