The importance of Thursday night’s clash between Celtic and Red Bull Leipzig cannot be understated.
Celtic have home advantage but are in more desperate need of a win, having only picked up three points from their opening three matches in the Europa League.
Thursday night’s visitors won the reverse fixture in Germany and the onus is on Celtic to make up some ground.
They only trail RB Leipzig by three points and both teams could be tied on six points if Celtic win on Thursday.
But the Bhoys’ inferior goal difference is a major concern at this stage of the competition.
Having shipped five goals and scored just twice, Celtic find themselves with a minus-three goal difference.
In contrast, RB Leipzig have found the net seven times and conceded four, giving them a six-goal advantage over their hosts.
Even a 3-0 victory for Celtic would not see them overtake RB Leipzig this Thursday; they would need a four-goal winning margin at the very least to leapfrog the Germans.
But this is not beyond the realms of possibility, given their current form in domestic football.
Since last month’s 2-0 loss at RB Leipzig, Celtic have played three matches and scored 13 goals, without conceding.
Prior to the RB Leipzig game, they scored 10 times in two games, giving them an overall tally of 23 goals in their previous five domestic games.
If Celtic are to succeed in Europe, they need to reduce the goal difference deficit and score plenty of goals on Thursday evening.