Luis Suarez war me it would be a tough night – he was right!

“We need to do better defensively as we conceded some easy goals against Barcelona.

“But, at the same time, we were playing against the best team in the world. They rested their team at the weekend while we were playing against Rangers in a tough derby game in which we gave everything.

“To then travel here a couple of days later to play against a team that has been rested, and that had made eight changes, we knew it would be tough.

“Now we need to learn from these mistakes and focus on what comes next.”

Today brings a return to domestic action in Inverness. But it is the clash with Toure’s former employers, Manchester City, on Wednesday week, in the first of the Celtic Park group-stage games, which will be the next big test.

“It doesn’t get easier,” said Toure with a wry grin at the thought of facing the considerable talents of Sergio Aguero and Kevin de Bruyne.

“But we are playing in the Champions League against the best teams in the world and our young players need to go through these situations. It’s how you learn.

“In front of our fans, I think it’s going to be different because the crowd is such a positive for us.

“Every home game is going to be crucial for us.

“We are going to try to win our Champions League games at Celtic Park. We will put the opposition under pressure at home.