There's been little to separate the two sides in recent years, with the last three encounters ending 1-1.
The midfielder was the last-gasp hero the last time the two sides met at Ewood Park, netting an injury time equaliser, and for Dunn, he expects it to be a close-run match once more.
"They have always been very good games and barring maybe one, very close," Dunn told Rovers Player
"The fans make the atmosphere very intense, both grounds have always been hostile when you walk out.
"So it is gong to be an interesting match, probably as close as its ever been.
"We need to focus on the game and hopefully we can get a positive result."
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