The European giants were placed in Group C on Thursday alongside Inter Milan and Viktoria Plzen.
Cameras panned to Kahn as Barcelona were drawn and the former goalkeeper couldn't hide his expression.
Bayern sent Barcelona down to the Europa League last season with a 3-0 victory on the final matchday of Group E.
Two years ago, they dismantled the Blaugrana 8-2 en route to winning the competition. You can understand why they'd be confident.
Look at Bayern‘s CEO Oliver Kahn when he found out Bayern are facing Barca 😭😭😭😭 Barca are not rated pic.twitter.com/aWbTcI2uIA— Deniz (@MusialaEra) August 25, 2022
Catalan publication Sport didn't take the 53-year-old's reaction well at all, writing: "Kahn scoffs at Barca. It was an unusual reaction from a manager taking part in the draw where respect is actually the norm."
The draw will see Robert Lewandowski return to the Allianz Arena after leaving Bayern for Barca earlier this summer.
Kahn denied laughing at Barcelona in the draw, stressing it was down to his side coming up against former star striker Lewandowski.
He told Bild: "This interpretation is really completely out of thin air. Robert Lewandowski left us for FC Barcelona just a few weeks ago.
"Now the draw brings us back together in the group stage of the Champions League. I smiled at such oddities of football. I have the utmost respect for Robert and FC Barcelona."
There is definitely a bit of needle in the rivalry though. Bayern manager Julian Nagelsmann unloaded on Barcelona president Joan Laporta about the club's finances last month.
"It is the only club in the world that have no money, but then buy all the players they want. I don't know how they do it. It's a bit strange, a bit crazy," he said shortly after Lewandowski's departure was confirmed.
That saw a furious Laporta fire back with: "What I would ask is that they focus on their current account, an important amount of money has gone into it for the transfer of Lewandowski.
"I respect everyone and I don’t get involved in the economics of rest."
"I will give them the benefit of the doubt because maybe they thought that we couldn’t, but they haven’t gauged the strength of Barca and the drive of the new board. It’s a lack of recognition, a lack of information about our club."
Featured Image Credit: UEFA
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