Celtic face an uphill task against Barcelona as they face them at home having suffered a 7-0 defeat at the Nou Camp.
Celtic need to win if they want to stay in the group, and their main hope is that the home crowd as they, on special nights like this, drive them to victory.
We look at the likely Celtic line-up.
Craig Gordan
If Celtic are to get anything from this match, you would expect Craig Gordon to pull off a man of the match performance to help them achieve that.
Cristian Gamboa
A big test for the Costa Rican defender. Known for being strong going forward, but needs to concentrate defensively if he is going to help nullify the Barcelona forward line.
Mikael Lustig
The Swede is likely to start at the heart of defence and will need to draw on his Champions League experience if Celtic are to come through unscathed.
Erik Sviatchenko
Celtic’s best defender and tonight he faces his biggest test yet. He must stand up to be counted after a nightmare performance at the Nou Camp.
Emilio Izaguirre
The Honduran left-back has his work cut out and must focus on his defensive game, ignoring the temptation to venture forward too often.
Scott Brown
The Celtic captain must set the tone for his side and lead by example. He is capable of inspiring this Celtic side to big things and must win the midfield battle by whatever means it takes.
Nir Bitton
The defensive shield, he is going to be vitally important to helping Celtic shut up shop.
James Forrest
Will probably be picked instead of Roberts due to the fact he works hard and is reliable. Will need to help stop the rampaging Barcelona full-backs.
Tom Rogic
If Celtic are to create any chances, it is likely it will come through him, so he must be on the top of his game. Barcelona may be vulnerable to his late runs into the box.
Scott Sinclair
He must play as he did against Manchester City. Direct, and without fear. There may be space for him out wide if he is smart so he needs to find it.
Moussa Dembele
He is the talk of the town at the moment, and Barcelona will get a first-hand look at the man they are linked with. He must be clinical as chances are likely to be hard to come by.