"It's a massive achievement and it's where this club used to play regularly a few years ago," said Grayson. "It'll be the first time that me and a lot of the players have gone to Old Trafford and we'll thoroughly enjoy the day when it comes around.
"We'll be going their to give our best account, to do credit to this football club and give them a decent game. It's going to be tough but we'll see where it takes us."
The game will be televised live on ITV1 on Sunday, January 3, at 1pm.