"It will be almost for certain a different type of game to the last two we played," he says.
"We are playing a Leicester team fighting for its lives under a new management team in Dave Bassett and Micky Adams.
"Dave has got a big reputation in the game in this sort of situation and I'm sure it will be revved up.
"They had a great result at the weekend, as did we, and I'm sure both sides are looking forward to the game.
"We like to play attractive football, which to an extent you are allowed to do against a Manchester United or an Arsenal, but you go to Leicester and it will be a different ball game in terms of the style you have to deal with."
After the controversy of last week when Paolo Di Canio was one of two players booked for 'diving' - something which the player himself vehemently denies - Glenn says:
"I trust my players that if they go down, they have been taken by a diabolical foul.
"But it is the nature of the game now and it has definitely got worse."
SQUAD: James, Hislop, Andersson, Schemmel, Winterburn, Minto, Repka, Dailly, Foxe, Hutchison, Carrick, Cole, Sinclair, Courtois, Di Canio, Defoe, Garcia, Kitson, Moncur.