But in Turin, there's no way. It's so difficult because there is too big a gap between the teams, despite Celtic holding their own in the first leg at Parkhead.
The final score in the first leg was probably a bit harsh given Celtic's performance, but Juventus have the genuine qualities of a typical Italian team: very good defensively, well organised, efficient and dangerous on the attack. Celtic rapidly ran out of ideas when faced with Juve's defensive wall.
On their return to the Champions League this season, Juve look full of self-belief. The history at the club, the environment there and the know-how which saw them dominate the Italian championship last year have all contributed towards creating the confidence we can see today.
I think Juve are capable of going all the way. I've been involved in 150 Champions League matches during my career and they have taught me one thing: from the last 16 onwards, anything is possible.
Passing from a championship formula to direct elimination only reinforces the uncertainty of sport.
Paris Saint-Germain, who hadn't played Champions League football for eight years, put in a convincing display in Valencia. With a bit more efficiency in front of goal, it could easily have been 3-0, instead of 2-1.
The only uncertainty for PSG now is that scoreline. But they looked so far superior to Valencia in the first leg that I find it difficult to imagine them exiting the competition after the second leg in Paris.
Zlatan Ibrahimovic's recent problems in front of goal in the competition are a mystery to me. Perhaps defenders are paying a bit more attention to him now. Or maybe he feels burdened by a responsibility to score or find the solution himself.
Yet, in my opinion, he played well against Valencia, even if he didn't score. I'm not too worried for him.