The Celtic full-back may be disappointed that he wasn’t involved in the tournament kicking off on Tuesday following his side’s exit to AEK Athens in qualifying.
But that doesn’t stop any of the players enjoying the games between Europe’s top clubs.
And the competition got off to an amazing start with Liverpool’s hugely entertaining 3-2 victory over PSG at Anfield.
Tierney wasn’t watching though – instead finding other things to do than tune into the Champions League on Tuesday night.
He shared that in his press conference yesterday ahead of Celtic’s Europa League clash with Rosenborg tonight:
⚽️ Celtic v Rosenborg
Celtic open their Europa League group campaign against Rosenborg tomorrow night.
What does Kieran Tierney make of the opposition?
And did he manage to catch the Champions League action last night?
— BBC Sport Scotland (@BBCSportScot) September 19, 2018
He really is a Celtic diehard.
Tierney’s focus will now be on the visit of the Norwegian champions to Celtic Park for the first game of their Europa League campaign.
The teams have already met twice this season after being drawn together in Champions League qualifying, with Celtic coming out on top over both legs.