The Premier League champions and La Liga's leaders meet in one of the most attractive last-16 ties later this month, with Chelsea's star forward poised for his latest chance to shine on the biggest stage.
"You know, they have a guy who is not from this world," he said.
"He's different, a superclass. But this is not about one player, it is about the whole team."
Nevertheless, facing an in-form Barcelona is a prospect that sparks excitement rather than trepidation for the Belgium star.
"It's a beautiful match," he added.
"This season we are not the same as last season, of course, and they are very good but in the end it is a cup tie and you never know what happens.
"That's why we love football. I'm pretty sure we can beat them if we play together. We'll see."