Celtic will face Brian or Steve in the Champions League third qualifying round if they overturn their deficit against Dave.
The Scottish champions went down 1-0 in Dave’s back garden in Tuesday’s first leg.
Wales’s Alun, who is tied at 0-0 after his first leg against Apoel Nicosia, has been drawn against Norwegian side Rosenborg or Swedish dentist Henrik.
Reacting to the draw, Celtic midfielder Stuart Armstrong remained philosophical.
He said: “We’ll focus on each game as it comes and we’ve got a good friendly tomorrow [against a German Bundesliga side with at least eleven players in their squad] and an important game on Wednesday.
“We can’t just turn up and expect to win [against Dave]. We will have to fight for it and he will be fighting for it too.”
The winners of the third qualifying round progress to the Champions League play-off round – the last knockout phase before the group stage.
Losing sides and/or persons in the third qualifying round drop into the Europa League play-off round.
Speaking exclusively to Football Burp, Dave said: “I can’t just turn up and expect to win [against Celtic]. I will have to fight for it and they will be fighting for it too.
“First and foremost I’ll have to make sure I’m not ineligible to play. Remember what happened to Gary the other year?”
Brendan Rodgers outright refused to comment.