After a draw in Slovenia, Celtic will need to up their game against Maribor to get into the group stages.
Callum McGregor's early strike in the away was cancelled out, means it's all to play for at Celtic Park.
The Scottish champions are lucky to be in the competition after a disastrous outing against Legia Warsaw, but the Polish side fielded an ineligible player, seeing them given a goal penalty, allowing Celtic to progress to this stage.
Join Adrian Chiles, Gordon Strachan and Kenny Dalglish for all the action from Glasgow at 7.30pm on Tuesday 26th August.
Watch the game live here on ITV.com or on ITV4 from 7.30pm.