Rovers travel to the King Power Stadium looking to build on Saturday's draw against Leeds United with the manager believing another hardworking display is required in order to come away with some points.
"I think it is going to be a tough game," Appleton told Rovers Player
. "They've been up there for the majority season.
"They've drawn a few games of late which will make them frustrated, it is a midweek game, under the lights there's something special about them.
"I think our performance on Saturday was much more like what I'd expect, along with the tempo in our play.
"The atmosphere made for a good game on Saturday so hopefully we can take that into Tuesday night and cause a little bit of an upset."
Tickets for tonight's match will be on sale at the King Power Stadium priced £28 for Adults, £25 for Seniors, £20 Under 22s, £18 Under 18s, £10 Under 12s and £8 Under 8s.