The Celtic star is convinced familiarity will never breed contempt, from either side.
And he points out that there have been enough changes in personnel since they crossed swords in last season's Champions League to give next week's Group H match a whole new look and feel.
Commons said: "We've both had players come and go, so, when you look at the team sheets on the night, they will probably be very different from the games last season.
"I don't think it makes a big difference having played them a year ago, or if it had been 10 years ago. It's not going to affect us that much.
"We will watch video footage of the last five or six games and piece together how we are going to beat them."
That's a bold statement of intent from the attacking midfielder who has not had his belief shaken by the opening-day defeat to AC Milan.
He added: "We will be confident going into the game. We know we can play at that level, so we want to do ourselves justice."
The 2-1 victory over Barca at Parkhead last November was one of the biggest results in the club's recent history and opened the door for them to join the Catalans in progressing to the last 16.
Commons would like nothing better than to have a repeat to get them off the mark in the group and told the Celtic View: "If anything, there is less pressure.
"We are not expected to beat Barcelona - no-one is.
"Last year it was the 125th anniversary, we had the big display before the game, and it all came about in a way that made it a really special moment in Celtic's history.
"Barcelona will maybe be more fired up this time to show it was just a fluke result.
"But, without a doubt, we have some very technical individuals in our team who will be looking to take as many points as we can.
"Our aim is to replicate what we did last year, no matter who is in our group."