After a strong campaign so far, Celtic have every chance of qualifying as they head into their final match of the group stage on Wednesday night at home to Spartak Moscow.
It's simple: In order to progress, Celtic need to better whatever result Benfica manage to get away at Barcelona.
Few fancy the Portuguese side to cause a real upset and win in the Nou Camp.
In fact, the likely outcome is arguably a Barcelona win, meaning Celtic would need just one point to qualify.
Regardless of what Benfica might or might not do, Neil Lennon's side will look to impose themselves on the game from the start and do everything within their capabilities to progress.
Let's take a look at what they'll need to do in order to get the job done.