“But it seems like a long time ago now. The team is different and there is so much good feeling just now.
“We have the Champions League to look forward to and we are all really enjoying our football.
“I am a Celtic fan as much as I am a Celtic player, so I am looking forward to this game. But the focus is like every other game – we want to win and play well.”
Tierney, 19, is also hoping to establish himself in Gordon Strachan’s international plans. He said: “Yes, that’s the aim, but it still feels nice to be picked for the squad.
“All I can do is keep my head down, train hard and see what the manager thinks. I think I am ready now to play at that level, but it is the manager’s decision.
“There are a few of the other Celtic boys in the team so it always helps you feel settled.”
Leigh Griffiths, who netted his seventh goal of the campaign with a whizzbang effort in the 4-1 rout of Aberdeen at the weekend, could struggle to get the nod from Strachan while he attempts to overcome a hamstring strain.
“I would rather be playing with him than against him, that’s for sure.
“Hopefully, he’ll be fine for Scotland because he has been brilliant so far this season and I am sure that he would be able to do that for the national team, as well.”
Meanwhile, Celtic’s interest in James McCarthy has cooled significantly after Everton insisted the Hoops fan would not be leaving the club in the current transfer window.
The Goodison outfit believe a groin injury for the player may require surgery and that would scupper any moves for the Republic of Ireland midfielder.
