The Hoops trail 2-0 from the first leg at Parkhead and boss Tony Mowbray already knows his starting 11.
"When the Arsenal tie came out, my idea of how the team might play was settled pretty quickly," Mowbray said.
"The result of the first leg alters your thought patterns of how you might set up in the second leg.
"If we had been sitting here 2-0 up, then I would probably play a different team to one that is 2-0 down and having to score some goals.
"But I am pretty clear in my mind what my team will be next Wednesday.
"I understand that if we lose 2-0 again, I will be judged to have got the team wrong again but if we win 3-0 then hopefully everyone will be pretty happy."