Bayern Munich coach Thomas Tuchel insists their Champions League clash with Lazio is "50-50".

Bayern meet Lazio on Wednesday in the first-leg of their round 16 tie.

“I think that in football, it's normal to change formations," Tuchel said when asked about his tactics for the match.

“There are many teams that play different systems within the game. We need patience and composure. We already know what we want to do tomorrow; we had a tactical practice, we'll have a final practice, and then we have a defensive meeting, and we'll try to win the game.

“We play against an Italian team and I am not going to reveal anything because I know how tactically disciplined Italian teams and Sarri's teams are, so I won't say anything," he continued.

“We are not going to talk about the weaknesses; they are a disciplined team, they run a lot and they are homogenous. They play 4-3-3 and 4-1-4-1. They have a clear pressing system, they know how to defend deep and, as always with Sarri, there are close distances. It's going to be an emotional game."

He continued: “I can't imagine anyone underestimating this game, particularly after what happened on Saturday," Tuchel replied.

“It's important to not just criticise ourselves, but allow ourselves with confidence and show our confidence.

“I've seen Lazio play very well at home, in the derby against Roma. If the stadium will play a role, we have to lean against that. We have to be ready and show our reaction.

“We showed a reaction after a defeat in a cup game, the team's self-criticism is not a problem. They always show this in their analysis. Even in games we win, we are not happy with everything we do. We are open and honest with the staff and the team. I am convinced we'll show a reaction, we already did it in the past. It's a good opportunity with a good opponent, in a new competition. It's 50-50 from the start."