Scott Brown: Now Celtic must match Lenny's Lions and roar on the European stage

And he has warned his title-winning team-mates to walk the walk in Europe rather than talk the talk.

Former boss Lennon led Celtic into the last-16 of the Uefa Champions League after collecting 10 points - a Scottish record - in the group stages of the 2012-13 tournament.

Parkhead skipper Brown missed this season's turbulent early days of Ronny Deila's reign when Celtic blew the chance of getting into the group stage of Europe's premier competition because of injury.

And he knows how critical the July games will be to Celtic's season.

"The atmosphere is good, confidence is high and as a team we feel we are progressing in the right way," he said. "Getting to the group stage is a challenge enough just now.

"We think we are good enough. The players here all believe we can take that step.

"But it is one thing to talk about and another thing to do it. It is difficult.

"You have to show that you are good enough by the way you play. It is about the results that you get.

"This summer is massive for us. We all know that. Once you have experienced playing in the Champions League, there is nothing else like it. The atmosphere at the stadium on those nights is just amazing.

"The pressure is always there but that is the mark of a good team. To be able to handle that is what it is all about.

"The spirit in the team was great under Neil and it is great under Ronny.

"We feel that we have it in us to go and get into the Champions League but you have to be ready for these games because they are so important for us."

The midfielder will lift the SPFL trophy next week when Celtic are at home to Inverness.

And he has insisted that no matter how many times he does it, it is always a thrill to raise the trophy at Celtic Park.

"That is what it is all about, isn't it? It is a great feeling.

"It is for the fans as much as it is for us. They back us 110 per cent every week and it's great for them to get the chance to celebrate as well."