Wednesday are set to travel to St. Andrews on Saturday, with Bannan likely to start in midfield.
And the 26-year-old admits that he is expecting a hostile reception from the Blues supporters, due to his connections with Aston Villa.
“It’s not going to be nice but I’ll just get on with my game and forget about everything else," Bannan said.
“If we turn up on the day and play the way we can play with the squad we have got, then we are confident of getting the win.
“But it’s going to be another tough game like any other game in this league.
“We have to concentrate on what we are doing, keep the focus and hopefully that will see us get the three points.”
Bannan progressed through the ranks at Villa, before moving to Crystal Palace.
During his time at Selhurst Park, the Scotland international struggled to break into their first-team for a consistent run of matches, but he is starting to fulfil his potential at Wednesday.
Bannan has recently signed a new long-term contract at Hillsborough, and his performances in the heart of their midfield have been very impressive.
Despite being small in stature, Bannan has been tenacious in his defensive work - and he has also shown great quality going forward.
If Wednesday are able to beat Birmingham on Saturday, they could move into the play off places, and take a big step towards promotion.